ch 32

Question 1

How do animals differ from plants and fungi in their mode of nutrition

Answer 1

Animals ingest food and then use enzymes to digest

Question 2

Are animals eukaryotes and multicellular

Answer 2

yes

Question 3

What proovides structural support to animals

Answer 3

proteins- the most abudnat being collagen

Question 4

What regulates development

Answer 4

Hox Genes

Question 5

The cells of most animals are organized into tissues, how?

Answer 5

Tissues develop from embryonic layers By gastrulation

Question 6

Gastrulation forms what

Answer 6

germ layers

Question 7

What is the Cambrian Explosion

Answer 7

is the Evolutionary rapid diversification of animal phyla
- caused
atmospheric changes
evolution of hox genes

Question 8

How do animals reproduce

Answer 8

most reproduce sexually with some asexually and some both

Question 9

How does a zygote develop

Answer 9

zygote- cleavage- blastula- gastrula

Question 10

What is a body plane

Answer 10

set of morphological and developmental traits

Question 11

Wht is it important to identify body planes

Answer 11

it differentiates major groups

Question 12

4 components of body planes

Answer 12

1- symmetry
2- tissues
3- body cavities
4- protostome or duetrotstome

Question 13

What are the two types sof symmetry

Answer 13

Radial and bilateral

Question 14

Characteristics of radial symmetry

Answer 14

top and bottom
NO:
front or back
left or right
found in:
planktonic creatures like jellies

Question 15

Characteristics of Bilateral symmetry

Answer 15

top and bottom
left and right
front and back
has CNS
found in arthropods and mammals

Question 16

Ectoderm tissue

Answer 16

outer layer, forms outer layer and CNS

Question 17

Endoderm tissue

Answer 17

innermost layer, forms lining of digestive tract, liver and lungs

Question 18

Mesoderm tissue

Answer 18

only in bilaterally symmetrical organisms, forms muscles and most organs

Question 19

What is a body cavity

Answer 19

fluid or air filled space between digestive tract and outer body wall

Question 20

Coelom functions

Answer 20

• cushions organs
  allows ind movement and growth of organs
  suspension structure for organ attachment

Question 21

What are protostome and deuterostome

Answer 21

two early stage developmental modes

Question 22

Protostome charactersitics

Answer 22

• first then mouth
  develop spinal cleavage
  mouth develops from blastopore

Question 23

deuterostome charactersitics

Answer 23

second then mouth
radial cleavage
anus develops from blastopore

Question 24

Invertebrates are

Answer 24

polyphyletic and highly diverse

Question 25

Groups of invertebrates: Proferia

Answer 25

• sponges
• lack tissue layers

Question 26

Groups of invertebrates: eumetazoa

Answer 26

Cridoria
true tissues
all animals except sponges