Module Four

Question 1

two major subgroups of animalia

Answer 1

invertebrates and vertebrates

Question 2

what are the vertebrates represented by as a phylum?

Answer 2

Chordata

Question 3

where do the majority of the invertebrates live? besides insects

Answer 3

the ocean

Question 4

what does prorifera contain?

Answer 4

sponges `

Question 5

what is a substrate?

Answer 5

when sponges are attatched to a bottom surface

Question 6

what does prorifera mean?

Answer 6

“pore-bearing”

Question 7

pore cells

Answer 7

allow water to move into the animal

Question 8

collar cells

Answer 8

have a flagellum that make a current of water to flow into the animal

Question 9

osculum

Answer 9

large opening on the top of a sponge through which filtered water is expelled

Question 10

how does water go through the sponge

Answer 10

enters from the side and exits out the top

Question 11

Amoebocytes

Answer 11

cells within a sponge that produce its skeletal structure, preform digestion, and repair cell damage

Question 12

gemmule

Answer 12

a group of cells surrounded by a shell made of spicules

Question 13

larva

Answer 13

an immature state of an animal that appears different than the adult stage

Question 14

metamorphosis

Answer 14

changing from larva to adult form

Question 15

spherical symmetry

Answer 15

body form in which any cut through the body’s center would be identical to eachother

Question 16

what is radial symmetry?

Answer 16

a body form in which any longitudinal cut along the length through the organism’s central axis results in identical halves

Question 17

bilateral symmetry

Answer 17

a body form in which only one longitudinal cut through the organism’s center would result in identical halves

Question 18

What’s a polyp?

Answer 18

an attached cnidarian stage appearing sack like or barrel like

Question 19

Medusa??

Answer 19

a free swimming cnidarian stage appearing bell or umbrella shaped

Question 20

what is a mesoglea?

Answer 20

a jelly-like substance between the inner and outer layer of cells in a cnidarian

Question 21

Nearly all cnidarians are ______?

Answer 21

carnivores

Question 22

two basic body forms of the cnidarians are the _____ and the ____?

Answer 22

polyp and medusa

Question 23

two sides of a cnidarian

Answer 23

oral and aboral