Term
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Definition
| the cell structure that collects extra water from the cytoplasm and then expels it from the cell |
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Term
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Definition
| the hind section of an arachnids body that contains its reproductive organs and part of its digestive tract; the hind section of an insect's body. |
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Term
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Definition
| a nonliving part of an ecosystem. |
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Term
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Definition
| a characteristic that helps an organism survive in its environment or reproduce. |
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Term
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Definition
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Term
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Definition
| the rapid growth of a population of algae. |
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Term
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Definition
| an ectothermic vertebrate that spends its early life in water and its adulthood on land, returning to water to reproduce. |
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Term
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Definition
| a plant that produces seeds that are enclosed in a protective structure. |
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Term
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Definition
| an appendage on the head of some animals that contains sense organs. |
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Term
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Definition
| the opening at the end of an organism's digestive system through which wastes exit. |
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Term
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Definition
| an arthropod with only two body sections. |
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Term
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Definition
| an invertebrate that has an external skeleton, a segmented body, and jointed attachments called appendages. |
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Term
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Definition
| Each of the two upper chambers of the heart that receives blood that comes into the heart. |
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Term
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Definition
| the plant hormone that speeds up the rate of growth in plant cells. |
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Term
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Definition
| all the actions an animal performs. |
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Term
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Definition
| line symmetry; the quality of being divisible into two halves that are mirror images. |
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Term
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Definition
| the production of light by a living organism. |
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Term
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Definition
| a living part of an ecosystem. |
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Term
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Definition
| an endothermic vertebrate that has feathers and a four-chambered heart, and lays eggs. |
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Term
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Definition
| the number of births in a population in a certain amount of time. |
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Term
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Definition
| a mollusk that has two shells held together by hinges and strong muscles. |
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Term
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Definition
| a wetland where sphagnum moss grows on top of acidic water. |
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Term
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Definition
| the force that water exerts upward on any underwater object. |
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Term
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Definition
| a form of asexual reproduction in which a new organism grows out of the body of a parent. |
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Term
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Definition
| the layer of cells in a plant that produces new phloem and xylem cells. |
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Term
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Definition
| sharply pointed teeth that stab food and tear into it. |
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Term
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Definition
| an animal that eats only other animals. |
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Term
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Definition
| a connective tissue that is more flexible than bone and that gives support to some parts of the body. |
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Term
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Definition
| the basic unit of structure and function in living things. |
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Term
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Definition
| the outside boundary of a cell; controls which substances can enter or leave the cell. |
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Term
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Definition
| a mollusk with feet adapted to form tentacles around its mouth. |
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Term
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Definition
| the tough flexible material from which arthropod exoskeletons are made. |
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Term
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Definition
| the pyllum whose members have a notochord, a nerve chord and slits in their throat area at some point in their lives. |
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Term
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Definition
| the hairlike projections on the outside of cells that move in a wave-like manner. |
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Term
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Definition
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Term
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Definition
| animals whose stinging cells are used to capture prey and defend themselves, and who take their food into a hollow center of gravity. |
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Term
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Definition
| all the different populations that live together in a given area. |
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Term
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Definition
| the struggle between organisms for the limited resources in a habitat. |
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Term
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Definition
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Term
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Definition
| the process of learning to connect a stimulus with a good or bad event. |
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Term
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Definition
| the reproductive structure of a gymnosperm. |
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Term
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Definition
| a body tissue that provides supports for the body and connect all of its parts. |
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Term
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Definition
| an organism that obtains energy by feeding on other organisms. |
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Term
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Definition
| a large feather that helps give shape to a bird's body. |
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Term
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Definition
| the behavior that animals of the same species engage in to prepare for mating. |
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Term
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Definition
| a bird's internal storage tank that allows it store food inside its body after swallowing it. |
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Term
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Definition
| an arthropod that has two or three body sections, five or more pairs of legs, two pairs of antennae, and usually three pairs of appendages for chewing. |
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Term
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Definition
| the waxy, waterproof layer, that covers the leaves and stems of some plants. |
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Term
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Definition
| the region of a cell located inside the cell membrane (in prokaryotes) or between the cell membrane nucleus (eukaryotes); contains a gel-like material and cell organelles. |
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Term
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Definition
| the number of deaths in a certain amount of time. |
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Term
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Definition
| an organism that breaks down large chemicals from dead organisms into small chemicals and returns important chemicals to the soil and water. |
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Term
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Definition
| a large, dome shaped muscle that plays an important role in breathing |
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Term
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Definition
| an organism that two seed leaves |
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Term
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Definition
| short, fluffy feathers that trap heat and keep a bird warm |
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Term
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Definition
| a radially symmetrical invertebrate that lives on the ocean floor, and has a spiny internal skeleton |
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Term
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Definition
| the study of how living things interact with each other and their environment |
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Term
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Definition
| all living, and non-living things that interact in an area |
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Term
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Definition
| an animal whose body does not produce much internal heat |
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Term
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Definition
| the young plant that develops from the zygote. also, a developing human during the first 8 weeks after fertilization has occurred. |
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Term
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Definition
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Term
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Definition
| an animal whose body controls and regulates its temperature |
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Term
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Definition
| a habitat where animals live. |
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Term
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Definition
| a body tissue that covers the surface of the body, inside and out. |
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Term
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Definition
| an approximation of a number based on reasonable assumptions. |
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Term
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Definition
| the build up over time of nutrients in freshwater lakes and ponds that leads to an increase in the growth of algae |
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Term
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Definition
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Term
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Definition
| the joining of a sperm cell and an egg cell. |
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Term
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Definition
| a vertebrate that lives in the water and has fins. |
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Term
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Definition
| a series of events in which one organism eats another |
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Term
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Definition
| the pattern of overlapping food chains in an ecosystem |
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Term
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Definition
| the preserved remains or traces of an organism that lived in the past. |
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Term
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Definition
| the ripened ovary and other structures that enclose one or more seed of an organism |
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Term
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Definition
| the reproductive hypha of a fungus |
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Term
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Definition
| a mollusk with a single shell, or no shell |
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Term
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Definition
| the early growth stage of the embryo plant in a seed |
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Term
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Definition
| the length of time between fertilization and birth of a mammal |
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Term
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Definition
| an organisms breathing organ that removes oxygen from water |
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Term
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Definition
| a thick walled, muscular part of a birds stomach that squeezes and grinds partially digested food. |
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Term
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Definition
| a plant that produces seeds that are not enclosed by a protective covering. |
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Term
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Definition
| the place where an organism lives and that provides the things that organisms need |
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Term
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Definition
| an animal that eats only plants |
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Term
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Definition
| a state of greatly reduced body activity that occurs during the winter |
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Term
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Definition
| the process by which an organisms internal environment is kept stable in spite of changes in the external environment |
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Term
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Definition
| a chemical that affects a plants growth and development |
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Term
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Definition
| an organism that provides a source of energy or a suitable environment for a virus or for another organism to live |
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Term
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Definition
| one of many branching, threadlike tubes that make up the body of a fungus. |
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Term
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Definition
| flat-edged teeth used to bite off and cut parts of food |
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Term
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Definition
| the process of learning how to solve a problem or do something new by applying what you already know |
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Term
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Definition
| an inborn behavior pattern that animals performs correctly the first time |
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Term
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Definition
| a material that does not conduct heat well and thus, helps to prevent heat from escaping |
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Term
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Definition
| a major organ of the excretory system; eliminates urea, excess water, and other waste materials from the body |
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Term
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Definition
| the immature form of an animal that looks very different from the adult |
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Term
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Definition
| the process that leads to change in behavior based on practice or experience |
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Term
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Definition
| the combination of a fungus and either an alga or an autotrophic bacterium that live together in a mutualistic relationship |
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Term
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Definition
| an upward force on an object that results from the difference in pressure between the upper and lower surfaces of the object. |
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Term
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Definition
| an environmental factor that prevents a population from increasing. |
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Term
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Definition
| an endothermic vertebrate with a four-chambered heart, skin covered with fur or hair, and has young fed with milk from the mother's body. |
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Term
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Definition
| the organs that produce the milk with which mammals feed their young. |
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Term
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Definition
| a mammal whose young are born alive at an early stage of development, and which usually continue to develop in a pouch on the mother's body. |
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Term
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Definition
| the cnidarian body plan characterized by a bowl shape and which is adapted for a free-swimming life. |
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Term
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Definition
| a process in which an animal's body undergoes dramatic changes in form during its life cycle. |
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Term
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Definition
| the regular, periodic journey of an animal from one place to another and back again for the purpose of feeding or reproducing. |
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Term
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Definition
| teeth that, along with premolars, grind and shred food into tiny bits. |
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Term
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Definition
| an invertebrate with a soft, unsegmented body; most are protected by hard outer shells. |
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Term
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Definition
| the process of shedding an outgrown exoskeleton. |
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Term
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Definition
| an angiosperm that has only one seed leaf |
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Term
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Definition
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Term
|
Definition
| a body tissue that contracts or shortens, making body parts move. |
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Term
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Definition
| a change in a gene or chromosome. |
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Term
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Definition
| a type of symbiosis in which both partners benefit from living together. |
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Term
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Definition
| an organism's particular role in an ecosystem, or how it makes its living. |
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Term
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Definition
| a low-growing plant that lacks vascular tissue. |
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Term
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Definition
| a flexible rod that supports a chordate's back. |
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Term
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Definition
| the control center of a cell that directs the cell's activities; contains the chemical instructions that direct all the cell's activities and determine the cell's characteristics. |
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Term
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Definition
| an animal that eats both plants and animals. |
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Term
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Definition
| a structure in the body that is composed of different kinds of tissue. |
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Term
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Definition
| a group of organs that work together to perform a major function in the body. |
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Term
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Definition
| a protective structure in plants that encloses the developing seeds. Also, an organ of the female reproductive system in which eggs and estrogen are produced. |
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Term
|
Definition
| a plant structure in seed plants that contains an egg cell. |
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Term
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Definition
| an organism that lives on or in a host and causes harm to the host. |
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Term
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Definition
| a relationship in which one organism lives on or inside another AND harms it. |
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Term
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Definition
| the blackish-brown material consisting of compressed layers of dead sphagnum mosses that grow in bogs. |
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Term
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Definition
| teeth that, along with molars,grind and shred food into tiny bits. |
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Term
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Definition
| one of the colorful, leaflike structures of a plant. |
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Term
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Definition
| a chemical released by one animal that affects the behavior of another animal of the same species. |
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Term
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Definition
| the vascular tissue through which food moves in some plants. |
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Term
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Definition
| a colored chemical compound that absorbs light, producing color. |
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Term
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Definition
| the female reproductive parts of a flower. |
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Term
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Definition
| a membrane that becomes the link between the developing embryo or fetus and the mother. |
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Term
|
Definition
| a mammal that develops inside its mother's body until its body systems can function independently. |
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Term
|
Definition
| the transfer of pollen from male reproductive structures to female reproductive structures in plants. |
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Term
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Definition
| tiny particles produced by plants that contain the microscopic cells that later become sperm cells. |
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Term
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Definition
| the cnidarian body plan characterized by a vaselike shape and which is usually adapted for life attached to an underwater surface. |
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Term
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Definition
| all the members of one species in a particular area. |
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Term
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Definition
| the number of individuals in a specific area. |
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Term
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Definition
| an interaction in which one organism hunts and kills another animal for food. |
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Term
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Definition
| a carnivore that hunts and kills other animals for food and has adaptations that help it capture the animals it preys upon. |
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Term
|
Definition
| an animal that a predator feeds upon. |
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Term
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Definition
| an organism that can make its own food. |
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Term
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Definition
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Term
|
Definition
| a "flat foot" or temporary bulge of the cell membrane used for feeding or movement in some protozoans |
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Term
|
Definition
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Term
|
Definition
| the quality of having many lines of symmetry that all pass through a central point. |
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Term
|
Definition
| a flexible ribbon of teeth in mollusks. |
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Term
|
Definition
| an algae bloom that occurs in salt water. |
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Term
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Definition
| the ability of an organism to regrow body parts. |
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Term
|
Definition
| an extothermic vertebrate with lungs and scaly skin; lays eggs with tough, leathery shells. |
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Term
|
Definition
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Term
|
Definition
| the thin rootlike structure that anchors a moss and absorbs water and nutrients for the plant. |
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Term
|
Definition
| a structure that covers the tip of a root, protecting the root from injury hat covers the tip of a root, |
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Term
|
Definition
| a carnivore that feeds on the bodies of dead organisms. |
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Term
|
Definition
| a type of rock that forms when particles from other rocks or the remains of plants and animals are pressed and cemented together. |
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Term
|
Definition
| the plant structure that contains a young plant inside a protective covering. |
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Term
|
Definition
| a leaflike structure that encloses the bud of a flower. |
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Term
|
Definition
| a tiny cell that is able to grow into a new organism. |
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Term
|
Definition
| the male reproductive parts of a flower. |
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Term
|
Definition
| a change in an organism's surroundings that causes the organism to react. |
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Term
|
Definition
| the small opening on the undersides of most leaves through which oxygen and carbon dioxide can move. |
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Term
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Definition
| the reaction of a person's body and mind to threatening, challenging or disturbing events. |
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Term
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Definition
| an internal gas-filled organ that helps a bony fish stabilize its body at different water depths. |
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Term
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Definition
| a close relationship between two organisms in which at least one of the organisms benefits. |
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Term
|
Definition
| an area that is occupied and defended by an animal or group of animals. |
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Term
|
Definition
| a group of similar cells that perform a specific function in an organism. |
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Term
|
Definition
| a characteristic that an organism can pass on to its offspring through its genes. |
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Term
|
Definition
| the learning that occurs when an animal learns to perform a behavior more and more skillfully through repeated practice. |
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Term
|
Definition
| the growth response of a plant toward or away from a stimulus. |
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Term
|
Definition
| a watery fluid produced by the kidneys that contains urea and other waste materials |
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Term
|
Definition
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Term
|
Definition
| the internal transporting tissue in some plants that is made up of tubelike structures. |
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Term
|
Definition
| a lower chamber of the heart that pumps blood out to the lungs and body. |
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Term
|
Definition
| the bones that make up the backbone of an animal. |
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Term
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Definition
| the vascular tissue through which water and nutrients move in some plants. |
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Term
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Definition
| a fertilized egg, produced by the joining of sperm and egg. |
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