lab quiz 4

Question 1

gills have

Answer 1

many thin folded layers, cilia on surface, and two blood vessels going in opposite directions

Question 2

mollusk basic parts

Answer 2

shell, mantle, mantle cavity, ventral foot, dorsal ventral mass, radula

Question 3

shell

Answer 3

Composed of calcium carbonate; provides
protection for these soft bodied animals

Question 4

mantle

Answer 4

thin layer of tissue covers the visceral mass on both
sides, lies between the visceral mass and the shell; it secretes the shell

Question 5

mantle cavity

Answer 5

Space between visceral mass and mantle, in many molluscs the gills are suspended here

Question 6

ventral foot

Answer 6

Muscular; used for locomotion in generalized mollusc

Question 7

dorsal ventral mass

Answer 7

Location of digestive, reproductive, excretory organs—makes sense that these soft organs would be located dorsally under the shell for protection, mollusca means “soft bodied

Question 8

radula

Answer 8

A toothed tongue; it scrapes food, like algae, off surfaces and/or shreds food into smaller pieces

Question 9

hemoceol

Answer 9

main body cavity in mollusc and arthropods

Question 10

coelom in mollusc

Answer 10

reduced to cavity just around the heart.

Question 11

closed circulatory system

Answer 11

cephalopod circulatory system

Question 12

open circulatory system

Answer 12

non cephalopod molluscs circulatory system and arthropod circulatory system

Question 13

kidney

Answer 13

excretory system of molluscs

Question 14

kidney steps

Answer 14

1. unselective filtration of coelomic fluid 2. selective reabsorption 3. excretion

Question 15

ammonia and uric acid

Answer 15

aquatic and terrestrial nitrogenous waste in molluscs

Question 16

Polyplacophora

Answer 16

chitons

Question 17

gastropoda

Answer 17

slugs and snails

Question 18

bivalvia

Answer 18

clams, mussels, scallops, oysters

Question 19

cephalopoda

Answer 19

squid, octopus, cuttlefish, nautilus

Question 20

mollusc and arthropod digestive tract

Answer 20

complete digestive tract

Question 21

bivalve feeding strategy

Answer 21

active suspension feeding

Question 22

bivalve nervous system

Answer 22

less centralized and less cephalized

Question 23

siphons

Answer 23

where water enters and exits the mantle cavity

Question 24

movement of blood in cephalopods

Answer 24

veins with deoxygenated blood –> gill heart –> oxygenated gills –>systemic heart –> arteries with oxygenated blood

Question 25

chromataphore

Answer 25

for cephalopod camouflage or communication

Question 26

buccal bulb

Answer 26

houses the radula and beak in squids

Question 27

squid nervous system

Answer 27

large brain, with sensory structures like eyes and tentacles to see and catch prey

Question 28

torsion

Answer 28

occurs only in gastropods, and rotates the visceral mass and mantle and results so the mantle cavity is over the head and mouth so the gut and nervous system are twisted

Question 29

pneumostome

Answer 29

opening on the right side of the mantle of a terrestrial slug

Question 30

parts of gastropod protected by shell

Answer 30

it varies but probably mantle cavity and visceral mass

Question 31

gastropod gas exchange

Answer 31

terrestrial no shell : pneumostome, aquatic : gills, terrestrial with shell: lungs

Question 32

gastropod sensory structures

Answer 32

light sensing tentacles, and chemical sensing tentacles.

Question 33

gastropod with no shell

Answer 33

slugs

Question 34

gastropod with shell

Answer 34

snails

Question 35

chitin habitat

Answer 35

intertidal zone

Question 36

grazer

Answer 36

chitin feeding strategy

Question 37

location of gills in chitins

Answer 37

contained within the mantle cavity of chitins

Question 38

tugmata

Answer 38

functional groups formed by fused segments

Question 39

exoskeleton

Answer 39

formed by cuticle in arthropods

Question 40

cuticle

Answer 40

has a waxy layer on outside then the inner layer is hard and made of chitin

Question 41

exoskeleton requirements

Answer 41

1. hard enough for protection 2. light enough for mobility 3. versatile thickness and flexibility.

Question 42

exoskeleton functions

Answer 42

shape and support, attachment for muscles for locomotion, protection, prevention of water loss, integral part of sensory receptors.

Question 43

arthropod nervous system

Answer 43

ventral nerve cord with segmental ganglia

Question 44

4 respiratory organs in arthropods

Answer 44

gills, booked gills, lungs, and trachea

Question 45

spiricle

Answer 45

the external opening of the trachea

Question 46

Chelicerata

Answer 46

horseshoe crab, spiders, scorpions, mite

Question 47

crustatea

Answer 47

crayfish, crab, shrimp, barnacle

Question 48

Myriapoda

Answer 48

centipedes and millipedes

Question 49

hexapoda

Answer 49

grasshopper, cockroach, water bug, mealworm beetle, termite, walking stick

Question 50

what causes size constraint in arthropods

Answer 50

molting and exoskeleton weight and strength

Question 51

cheliped

Answer 51

in arthropods, one of the pair of appendages that have claws

Question 52

carapace

Answer 52

hard shell covering back in crustations

Question 53

chelicerea

Answer 53

first appendage: venomous fang of spider

Question 54

pedipalps

Answer 54

second appendage: on spider used to hold onto prey

Question 55

crustacea clade

Answer 55

includes crustacea and hexapods

Question 56

complete metamorphosis advantage

Answer 56

animal ends up not having to share food source like they would in incomplete metamorphosis