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BI488- Invertebrate Conservation > Week 9 > Flashcards

Flashcards in Week 9 Deck (31)
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1

T or F: Acoelomate bilaterans are triploblastic

T

2

what are the two types of muscles in platyhelminthes

longitudinal and circular muscle

3

T or F: there are free living and symbiotic platyhelminthes

T

4

free living platyhelminthes have a _____ epidermis with ______

ciliated, rhabdites

5

how do free living platyhelminthes feed

mid-body mouth, protruding pharynx

6

how do symbiotic platyhelminthes feed

anterior mouth

7

what are protonephridia

flame cells: osmoregulatory function and deal with fluid balance

8

T or F: phylum platyhelminthes can either have a simple or complex nervous system

T

9

What is the difference between the simple and complex nervous system

simple has a subdermal nervous nerve plexus, whereas complex has a CNS

10

how do platyhelminthes reproduce asexually

fission

11

why is segmentation important in annelids

allowed for evolution

12

coelom forms in annelids by _____

schizocoely

13

what are setae

present in annelids, tiny chitinous bristles that prevent them from slipping backwards

14

what are the different types of annelids

polychaetes, earthworms and leeches

15

T or F: annelids have both circular and longitudinal muscle

T

16

what is the pygidium

the last segment in annelids

17

what is the prostromium

segment with sensory cells including the eyes

18

what are the two parts of the parapodim

noto and neuropodum

19

what class of annelids are the most important in marine enviornments

polychaetes

20

what are some characteristics of polychaetes

well differentiated head, paired parapodia, no citellum, jaws or tentacles

21

T or F: polychates are a true class

F

22

T or F: polychaetes have the best developed organs

T

23

what are parapodia used for

crawling, swimming, or achoring in tubes

24

what are errant polychaetes

predators and scavengers, mobile

25

why are the major invertebrate taxa difficult to accurately estiamte

undersampled and understudied, some taxonomists differ within species identification

26

what is the functional role of porifera in coral reef

numerous symbiotic relationships with microorganisms,

27

T or F: soft corals have less diversity than the hard corals

F

28

what are sipuncula

peanut worms

29

what are decapods

crayfish,crabs,lobsters,shrimp

30

how are shrimps (malacostracta) important for coral reefs

commensals on invertebrate hosts, mutualistic relationshops with fish (cleaner shrips)