Term
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Definition
| this phylum sheds its outer layers (molts) and includes nematodes and arthropods. species rich |
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Term
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Definition
| external coat that is shed |
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Term
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Definition
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Term
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Definition
| roundworm belongs to ______ |
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Term
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Definition
| these roundworms are found in water, soil, tissues and they decompose organic shit. also this group are parasites |
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Term
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Definition
| this parasite causes trichinosis from eating raw pork. the eggs bore in intestine and travel via white blood cells. |
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Term
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Definition
| nematode used in aging research |
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Term
non-segmented, cylindrical
covered by cuticle-sheds
no real circulatory system |
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Definition
| what is the structure of nematodes? |
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Term
sexually- internal fertilization
separate sexes(female bigger) |
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Definition
| how do nematodes reproduce? |
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Term
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Definition
| early arthropods that had little variation in segments |
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Term
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Definition
| now extinct, but is what was thought arthropods evolved from. |
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Term
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Definition
| this group of organisms is known by its "jointed appendages" |
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Term
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Definition
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Term
| early arthropod (lobopod) |
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Definition
| Hallucigenia belongs to what phyla? |
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Term
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Definition
| 2 sets of ______ influenced segmentation in arthropods |
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Term
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Definition
| this covering of arthropods is thick in some places but thin to allow flexibility over joints |
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Term
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Definition
| this energetically expensive process leaves an arthropod vulnerable to danger briefly. |
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Term
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Definition
| exoskeleton of arthropods is made of______ |
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Term
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Definition
| this structure protects and provides for attachment of muscles in arthropods |
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Term
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Definition
| originally being aquatic this adaptation allowed for colonization of land |
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Term
| eyes, olfactory system and antennae concentrated at the anterior end |
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Definition
| the sensory organs of arthropods are well developed and include: |
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Term
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Definition
| hemolymph is used in________ circulatory systems |
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Term
| hemolymph is propelled by heart to short arteries then to sinuses (spaces around tissues and organs). hemolymph then returns to heart through pores with valves |
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Definition
| describe the circulatory system of arthropods |
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Term
hemocoel
not part of coelom (under-developed) |
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Definition
| main body cavity of arthropods. the sinuses are filled with hemolymph |
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Term
- gills
- specialized organs in exoskeleton
- terrestrials have internal surfaces
- insects have tracheal systems
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Definition
| 4 ways arthropods exchange gas |
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Term
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Definition
| this group has claw-like feeding appendages. |
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Term
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Definition
| sea spiders, horseshoe crabs, scorpions, ticks, mites, and spiders all belong to ________ |
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Term
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Definition
| claw-like feeding appendages- fangs/pinchers |
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Term
| euryptids (part of cheliceriforms) |
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Definition
| water scorpions (now extinct) belonged to this category as well as sea spiders and horseshoe crabs |
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Term
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Definition
| modern scorpions spiders ticks and mites, of the cheliceriforms, that have a cephalothorax with 6 appendages belongs to this sub group. |
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Term
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Definition
| pair of appendages- sensing, feeding, and reproducing |
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Term
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Definition
| in spiders these stacked plate-like structures have a large surface area for more gas exchange |
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Term
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Definition
| liquid protein produced in abs of spiders |
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Term
- drop line for quick escape
- cover eggs
- "gift wrap" prey for potential mates
- "ballooning" for flying
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Definition
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Term
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Definition
| this cheliceriform uses fanges with poison glands. |
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Term
| attacks and secretes digestive juice into prey and sucks up meal |
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Definition
| how do spiders attack prey |
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Term
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Definition
| this subgroup includes centipedes and millipedes. the head has antennae and 3 mouth parts |
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Term
large # of legs
each trunk segment has 2 paris of legs
eat decaying leaves- plant matter
earliest animals |
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Definition
| describe basic features of millipedes |
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Term
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Definition
| this organism is a carnivore with one pari of leg per each segment on body. they also have poison clawsto paralyze prey |
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Term
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Definition
| insects and wingless 6 legged relatives are referred to as_______ |
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Term
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Definition
| these structures are extensions of the cuticle (not appendages) from the dorsal side of the thorax. |
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Term
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Definition
| a nymph is another name for ______ that resemble adults |
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Term
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Definition
| in this prcocess of development the larva resembles the adult and slowly develops, looking more and more like the adult form |
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Term
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Definition
| in this development process the organism a larval stage then another stage (maggot/grub) that look completely different before coming an adult |
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Term
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Definition
| the pupil stage is from______ to ______ |
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Term
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Definition
| how many times to insects mate? |
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Term
sexually, internal fertilization
sperm is deposited or packaged and female picks it up |
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Definition
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Term
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Definition
| what structure stores sperm in female insects? |
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Term
- cheliceriform(arachnids)
- myriapods (milli/centipede)
- hexapods (insects)
- crustaceans
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Definition
| what are the 4 subphyla of arthropods? |
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Term
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Definition
| in this subphyla of arthropods, lost appendages can be regenerated |
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Term
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Definition
| this organism can have a toolkit of 19 appendages |
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Term
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Definition
| this subphyla of arthropods has appendages on the abs |
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Term
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Definition
| how do larger crustaceans exchange gas? |
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Term
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Definition
| smaller crustaceans exchange gas across thin areas of the_______ |
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Term
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Definition
| name one gas that is diffused across the cuticle of crustaceans |
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Term
sexually
lobster has special ab to transfer sperm to female |
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Definition
| how do crustaceans reproduce? |
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Term
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Definition
| pill bugs (wood lice) are an example of a crustacean but specifically belong to this subgroup |
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Term
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Definition
| this subgroup of crustaceans includes lobster, crayfish, crabs and large shrimp and there cuticle is hardened by calcium carbonate |
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Term
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Definition
| this decapod has a shield of hardened cuticle covering the dorsal side |
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Term
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Definition
| this subgroup has small planktonic organisms like krill |
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Term
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Definition
| this crustacean (copepod) is a major food source and fertilizer |
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Term
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Definition
| this sessile crustacean has a cuticle that hardens into a shell. to eat they extend appendages from shell to strain food |
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