science unit 5

Question 1

cnidarians

Answer 1

marine animals with sting bristles

Question 2

mollusk

Answer 2

soft bodied

Question 3

mantle

Answer 3

a growth organ that lines a mollusks inner shell

Question 4

echidnoderms

Answer 4

animals that live in the ocean and have spiny skin.

Question 5

thorax

Answer 5

the center segment of an insect or other animal

Question 6

cephalothorax

Answer 6

the body segment of crustaceans and arachnids that consists of the head and thorax fused together.

Question 7

maxilliped

Answer 7

the appendage that helps a crustacean eat

Question 8

millipede

Answer 8

a round-bodied arthropod with 2 pairs of legs on each body segment.

Question 9

metamorphisis

Answer 9

a series of physical changes that certain animal undergo

Question 10

Ectotherm

Answer 10

an organism that uses the environment to regulate their body temperature

Question 11

swim bladder

Answer 11

a balloon like organ that in bony fish that allows them to ascend or descend in water.

Question 12

vertebrate

Answer 12

an animal with a backbone

Question 13

what do collar cells do for sponges and why are they unique

Answer 13

they move water through the sponge and each cell digests it’s own food

Question 14

name 3 cnidarians

Answer 14

coral, jellyfish, sea anemone

Question 15

what are the 3 types of mollusks give an example of each

Answer 15

bivalves (clams) gastropod (snail) cephalopods (octopus)

Question 16

name 3 examples of echidnoderms

Answer 16

sea star, sea cucumber, brittle star

Question 17

name 3 types of arthropods

Answer 17

crabs, spider, shrimp

Question 18

name 3 crustaceans

Answer 18

crayfish, lobster, crab

Question 19

what important role do arachnids play in the world

Answer 19

they eat many insects and pests

Question 20

compare complete and incomplete metamorphisis

Answer 20

complete meta has 4 stages (egg larva pupa adult) incomplete has 3 (egg nymph adult)

Question 21

what are the 2 groups of vertebrates

Answer 21

ectotherms and endotherms

Question 22

what are 2 ways ectotherms regulate their body heat

Answer 22

lifting their body off the ground for airflow and basking to warm up

Question 23

what are the main groups of reptiles

Answer 23

turtles, snakes and lizards, crocs and alligators

Question 24

what are the 3 main groups of amphibians

Answer 24

caecilians, salamanders, toads and frogs

Question 25

how are fish equipped to live in water

Answer 25

streamlined bodies for gliding through water, fins for balance and moving, gills for breathing.

Question 26

how do endotherms maintain a constant body temperature

Answer 26

through chemical energy obtained from eating food

Question 27

what are the 3 main types of feathers

Answer 27

contour feathers protect birds, flight feathers provide lift, down feathers insulate birds

Question 28

what are the 3 groups of mammals

Answer 28

egg-laying mammals, marsupials, placental mammals.