Animal Characteristic (8.7)

Question 1

About 800 MYA (in the Pre-Cambrian Era) multicellular animals evolved from the ______ kingdom.

Answer 1

protist

Question 2

They would have evolved from a group of ____-_______

protists.

Answer 2

multi-cellular

Question 3

About 360 MYA animals (_____) begin to colonize land.

Answer 3

fish

Question 4

About 250 MYA Pangaea forms causing mass extinctions of _____ and ________. (Reptiles survive dry climate.)

Answer 4

fish, amphibians

Question 5

About 180 MYA _______ breaks apart.

Answer 5

Pangaea

Question 6

About 65 MYA an asteroid collides with Earth causing mass extinction of __________/_________. (Mammals survive)

Answer 6

reptiles/dinosaurs

Question 7

Animals traits

Answer 7

Multi-cellular heterotrophs by ingestion
Have no cell walls
Most have muscle and nervous tissue for movement and responding to a changing environment
Exhibit diploid dominant life-styles
(Reproduce sexually using flagellated sperms and non motile eggs that are haploid. Gametes fuse together to make diploid zygote. The zygote will continue to grow, by mitosis, and develop into the organism)

Question 8

Multi-cellular heterotrophs by ________

Answer 8

ingestion

Question 9

Do animals have cell walls?

Answer 9

no

Question 10

They have _____ and ______ tissue for movement and responding to a changing environment

Answer 10

muscle and nervous

Question 11

Exhibit ______ dominant life-styles

Answer 11

diploid

Question 12

They reproduce _________

Answer 12

sexually

Question 13

Gametes fuse together to make a _______ ________.

Answer 13

diploid zygote

Question 14

like animals

Answer 14

Parazoa

Question 15

true animals

Answer 15

Eumetazoa

Question 16

______ are asymmetrical, have no true tissues, and are non-motile but are heterotrophic

Answer 16

Parazoa

Question 17

a body plan in which the parts are organized in a circle around an axis

Answer 17

radial symmetry

Question 18

a condition in which two equal halves of a body mirror each other

Answer 18

bilateral symmetry

Question 19

two tissues (__________…. no muscle tissue) nerve net

Answer 19

diploblastic

Question 20

three tissues (__________), nervous system

Answer 20

triploblastic

Question 21

Three tissues

Answer 21

ectoderm, mesoderm, endoderm

Question 22

makes skin and nervous tissue

Answer 22

ectoderm

Question 23

makes muscles, bones, heart

Answer 23

mesoderm

Question 24

makes the digestive organs/tract, liver, and lungs

Answer 24

endoderm

Question 25

back/top

Answer 25

dorsal

Question 26

front/botton

Answer 26

ventral

Question 27

toward the head

Answer 27

anterior

Question 28

toward the tail

Answer 28

posterior

Question 29

the accumulation of senses in the head region of an animal

Answer 29

cephalization

Question 30

These are "without a cavity" animals (They tend to be very small - diffusion/osmosis is main transport system)

Answer 30

Acoelomates

Question 31

These are the false cavity animals (The space/cavity is between two different tissues) (The fluid filled space acts as a hydrostatic skeleton)

Answer 31

Pseudocoelomates

Question 32

These are the true cavity animals (The space is within one tissue - the mesoderm. It is for organ spaces and protection from the digestive tube)

Answer 32

Coelomates

Question 33

an organism whose embruing blastopore develops into an anus, whereas its mouth develops from a second opening at the opposite end of the archenteron; usually characterized by an embryo that undergoes indeterminate, radial cleavage

Answer 33

deuterostomes

Question 34

an organism whose embryonic blastopore develops into the mouth whose coelom arises by schizocoely and whose embryo has determinate cleavage

Answer 34

protostomes

Question 35

____________ are Echinoderms and Chordates (includes humans)

Answer 35

Dueterostomes

Question 36

__________ are Mollusks, Annelids, and Arthropods

Answer 36

Protostomes

Question 37

uses our senses to detect environment stimulus and cues as well as control bodily function

Answer 37

nervous system

Question 38

moving the organism about the environment

Answer 38

muscular/bone system

Question 39

moving oxygen and nutrients through an organisms whole body

Answer 39

circulatory system

Question 40

to perform gas exchange with the environment (O2 in, CO2 out)

Answer 40

respiratory system

Question 41

to breakdown food to the cellular level for providing nutrients to the cells

Answer 41

digestive system

Question 42

to dispose of liquid nitrogenous waste

Answer 42

excretory system