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BSCI test 3 review

BSCI test 3 review - Terms 1 2 3 Zooplankton microscopic...

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Terms Zooplankton: - microscopic animals (drift on their own, cannot move) - herbivores: eat phytoplankton and bacteria - ex: a) Crustacea- aquatic arthropods (like aquatic insects, jointed legs) 1) copepods- 80% of zooplankton (most common) 2) amphipods- tiny crustacea, similar to beach fleas 3) shrimp- tiny crustacea, planktonic b) Protozoa- unicellular or multi-cellular (most are multi-cellular) 1) examples of ciliates- have a lot of cilia (whip-like tentacles to bring in food), exist in millions in an amount of water, some are carnivorous and eat other ciliates Meroplankton: - only spend the early larvae stage of life floating around and then mature into an animal that can move on its own - ex: eggs of fish, worms, mollusks, snails, clams, shrimp, and other marine/estuarine organisms in larvae forms Epifauna: animals that live on the sea floor or attached to other animals or objects under water - Ex: crustacea (fiddler crabs, hermit crabs, amphipods), mollusks (snails) Infauna: organisms that live in tubes or burrows beneath the surface of the sea floor - Ex: clams, burrowing anemones, worms Pseudofeces: a way that filter-feeding bivalve mollusks get rid of suspended particles which have been rejected as unsuitable for food. Extirpated: locally extinct Extinct: having no species longer in existence, died out Nauplius larva: larva unique to all crustacea, 1 st stage in life cycle of barnacle (barnacle), a very important unifying feature found in all crustacea Jimmy: male crab Pheromone: sex attractant released by females (crabs) Polyp: 2 nd stage of jellyfish lifecycle; attaches to a solid substrate usually a rock or shell (jellyfish) Medusa: final jellyfish stage, free swimming with umbrella-shaped body and tentacles, mature stage, ready to produce eggs and sperm start life cycle again (jellyfish) Trochophore: 1 st planktonic stage of an oyster (oyster) Veliger: 2 nd stage in oyster life cycle (oyster) Spat: immature oyster, 3 rd stage before maturity (oyster)
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Hermaphrodite: a plant or animal that has both male and female reproductive organs and secondary sexual characteristics Sook: female crab
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