Chapter 34- Coelomate Invertebrates Flashcards Preview

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Flashcards in Chapter 34- Coelomate Invertebrates Deck (39):
1

What is in Phylum Mollusca

Snails, slugs, clams, octopuses

2

What is the viceral mass

Located in mollusks, it is above their foot, and contains most organs

3

Mantle?

Mollusks
-tissue surrounding mollusc body
-secretes shell if one

4

Foot?

Mollusks
-primary means of locomotion for many

5

Ctenida?

Gills in aquatic mollusks
-filter food in most bivalves

6

Shell

Mollusks
-protects against predators and adverse environments
-not essential

7

Radula?

Mollusks
-rasping tongue like structure used in feeding

8

What type of circulatory system do Mollusks have?

Open circulatory system
-except for cephalopods

9

What are Polyplacophora

Class of Mollusks
-Chitons
-oval bodies and overlapping dorsal plates

10

What are Gastropods

Class Gastropoda of Mollusks
-limpets, snails, slugs
single shell
have torsion-digestive tract faces same direction(mouth and anus)

11

What are nudibranches

class gastropoda
-active predators
-take nematocytes from cnidarians and use them on their own surface

12

Bivalves?

Class Bivalvia-phylum Molluska
clams, scallops, mussels, oysters
no distinct head
2 shells hinged together

13

Cephalopoda?

Class of phylum Mollusca
-active predators
-closed circulatory system
-octopuses etc.
-jet propulsion using siphon

14

What does Gonochoric mean?

Separate sexes in species

15

Phylum Nemertea?

long worms similar to flatworms
-have complete digestive tract
-Gonochoric with sexual reproduction

16

Whats the only class of Mollusks with a closed circulatory system

Cephalopoda

17

Phylum Annelida?

segmented round worms
-built of repeating units
-many have eyes
-ventral nerve cord

18

What phylum has specialization because of segmentation?

Phylum annelida

19

What is class clitellata a part of and whats in it?

It is in phylum annelida
-earthworms

20

Phylum arthropoda

most successful animal
-jointed appendages (wings, legs)
-Exoskeleton of chitin and protein
-open circulatory system

21

What are the 4 classes of arthropods?

chelicerates, crustaceans, hexapods, and myriapods

22

What is segmentation?

occurs in arthropods
-body is either divided into head, thorax and abdomen
-or head and thorax fused

23

What type of eyes do arthropods have?

compound eyes-composed of independent visual units

24

Whats in class Chelicerata

SPiders, ticks, mites, scorpions, horseshoe crabs
-lack antennae
-bipartate body (2 part)

25

What is class crustacea

Crabs, shrimps, lobsters, barnacles
bipartate body
-2 pairs antennae
-gas exchange through gills or across cuticle

26

What is a decapod crustacean

shrimps, lobster, crabs
-have 10 feet

27

What is class hexapoda

Insects
-more than half of all named animal species
-tripartate body plan
thorax has 3 segments
-hexapods-3 pairs of legs attached to thorax

28

What is metamorphosis

in class hexapoda
-insects morph into an adult species
-example butterflies

29

Class Myriapoda?

centipedes and milipedes
-poison fangs
-head regions followed by numerous segments

30

What type of coleomates are Echinoderms?

Deuterostomes

31

Describe Phylum Echinodermata

Exclusively marine
-sea stars, brittle stars, sea urchins

32

What type of symmetry do Echinodermata have?

pentaradial as adult, bilateral as larva
-systems organized with branches radiating from center

33

What type of skeleton do Echinoderms have?

endoskeleton
-epidermis covers skeleton

34

What do all echinoderms have?

a water vascular system
-radially organized

35

What is in class asteroidea of phylum echinodermata

sea stars and sea daisies
-important predators, 5 arms

36

What is in class echinoidea in phylum echinodermata

sea urchins and sand dollars
-lack arms
-protective moveable spines

37

what is in class ophiuroidea in phylum echinodermata

brittle stars
-equal diameter arms

38

what is in class crinoidea of phylum echinodermata

sea lilies and feather stars

39

what is in class holothuroidea in phylum echinodermata

sea cucumbers