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Definition
| group of organisms so similar to one another that they can breed and produce offspring. |
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| groups of individuals that belong to the same species and live in the same area. |
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| groups of different populations living together in a defined area |
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| total amount of living tissue within a given trophic level |
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| first growth that occurs on surfaces where there is no soil. |
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| growth after a disturbance like flood or fire. plants grow back faster because soil is present. |
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| eating different foods, different niches. |
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Definition
| How is competition reduced between organisms? |
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| symbiotic relationships (symbiosis) |
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Definition
| two species live closely together. |
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| no sunlight. permanently dark. |
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| (aquatic nursery) fresh water meets salt water |
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| all living things of an ecosystem (plants, fungus, bacteria, animals) |
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| all nonliving parts of an ecosystem. (temperature, humidity, sunlight, oxygen, water) |
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| number of individuals per unit area. |
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| unlimited resources, high birth rate, low death rate, no predation |
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| individuals in a population reproduce at a constant rate. Larger population = faster growth. |
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| restrains growth of a population; scare food and space, predation, drought. |
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| density dependent factors |
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Definition
| affect large dense populations, competition, predation, parasitism, disease. |
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Term
| resource partitioning (warblers.) |
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Definition
| birds that share the same tree and eat the same food but survive because they live in different levels of that tree. |
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Definition
| converts nitrogen gas to ammonia. |
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Definition
| bacteria converts nitrates into nitrogen gas. |
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Term
| movement of energy and nutrients |
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Definition
| energy flows in one direction; nutrients are recycled. |
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Term
| unequal heating of earth's surface. |
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Definition
| earth is tilted on its axis, sun strikes earth's surface at different angles. |
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| produces a large surface area and is where water enters the plant |
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| female structure on a conifer. |
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Definition
| filament stage of a moss plant |
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| branching, covers a large surface area, holding soil |
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| female structure that produces a single egg |
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| male structure that produces flagellated sperm |
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Definition
| seedless nonvascular plats (moss) |
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| top of sporophite, filled with spores |
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| male pollen grain of a conifer |
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| brown dot found on the underside of a ferns leaf, made up of sporangia. |
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Definition
| opening in egg where sperm must pass through. |
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| under upper epidermis, densely packed cells with lots of chlorophyll |
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| nastic movement regulated by? |
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Definition
| plants response to gravity |
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Definition
| loosely packed cells with air spaces connected to exterior stomatas. |
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| has both male and female parts |
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| plants movement in response to the daily cycles of light and dark |
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| surround stomata and control the opening and closing by responding to water pressure |
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Definition
| plant tracks the sunlight as it moves across the sky. |
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| flower that has only male or female parts |
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| a slow movement in response to stimuli. |
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| worms body plan has mirror images |
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Definition
| concentration of brain-like structure in the anterior area |
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| top; transports blood from tail to head |
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| bottom; transports blood from head to tail |
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Definition
| worms body divided into smaller segments |
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| specialized segments that secrete a mucus ring and surround the fertilized eggs to form a cocoon for incubation. |
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| aortic arches (annelid heart) |
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Definition
| 5 hearts; circulate blood. |
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| thin tissue that separates each segment holding tightly around earthworms inner organs. |
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| bristles found on the ventral surface used for traction and movement. |
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| sensory structures on the anterior end of the planarian that senses light and dark |
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Definition
| head of tape worm with suckers to attach to the intestinal wall of its host |
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Definition
| contains hooks and is found on the tip of the scolex. |
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Term
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Definition
| food chain levels, what level are consumers at? |
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Term
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Definition
| What happens to the energy not used by the animal and not passed? |
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Definition
| refers to the average, and causes a wide range of environmental conditions that shape our communities |
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| centipede characteristics |
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Definition
1)one pair of legs per segment
2) flat body
3) poisonous claw-like appendages
4) nocturnal carnivores |
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| millipede characteristics |
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Definition
1) 2 pairs of legs per segment
2) round body
3) secrete toxin from skin when curled
4) day eaters herbivores |
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Definition
| spiders, mites, ticks, scorpions, horseshoe crabs |
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| eyes of a spider and how many? |
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| manipulate food - 3 pairs |
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Definition
| appendages attached to the tail and used to hold eggs during reproductive seasons |
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| gills - legs move gills while moving in their environment. water circulates over gills, providing oxygen. |
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Definition
| gills attached to where on crayfish and why? |
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| excretory organ of arachnids that extract waste from circulatory fluid |
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Definition
| excretory gland in some arachnids. found on the base of some legs. discharges waste. |
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Definition
| holes in abdomen attached to tracheal tubes. allows oxygen to enter |
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Definition
| tubes that transport oxygen |
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Definition
| excretory organ that releases excess water. |
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Term
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Definition
1)segmented bodies
2)jointed appendages
3) exoskeleton |
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Definition
| a group of related animals of the same species work together for the benefit of the group. |
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Definition
| a process that changes the shape and forms a new body structure. |
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Definition
| network of fluid-filled canals connected to tube feet. |
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| central disk (regeneration) |
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Definition
| as long as the central disk of a starfish is attached, it can regenerate. |
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Term
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Definition
| cells that contain calcium . regulate the crayfishes equilibrium when its upside down. |
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