Animal Characteristic (8.7) Flashcards Preview

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Flashcards in Animal Characteristic (8.7) Deck (42):
1

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

protist

2

They would have evolved from a group of ____-_______
protists.

multi-cellular

3

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

fish

4

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

fish, amphibians

5

About 180 MYA _______ breaks apart.

Pangaea

6

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

reptiles/dinosaurs

7

Animals traits

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)

8

Multi-cellular heterotrophs by ________

ingestion

9

Do animals have cell walls?

no

10

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

muscle and nervous

11

Exhibit ______ dominant life-styles

diploid

12

They reproduce _________

sexually

13

Gametes fuse together to make a _______ ________.

diploid zygote

14

like animals

Parazoa

15

true animals

Eumetazoa

16

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

Parazoa

17

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

radial symmetry

18

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

bilateral symmetry

19

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

diploblastic

20

three tissues (__________), nervous system

triploblastic

21

Three tissues

ectoderm, mesoderm, endoderm

22

makes skin and nervous tissue

ectoderm

23

makes muscles, bones, heart

mesoderm

24

makes the digestive organs/tract, liver, and lungs

endoderm

25

back/top

dorsal

26

front/botton

ventral

27

toward the head

anterior

28

toward the tail

posterior

29

the accumulation of senses in the head region of an animal

cephalization

30

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

Acoelomates

31

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

Pseudocoelomates

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)

Coelomates

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

deuterostomes

34

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

protostomes

35

____________ are Echinoderms and Chordates (includes humans)

Dueterostomes

36

__________ are Mollusks, Annelids, and Arthropods

Protostomes

37

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

nervous system

38

moving the organism about the environment

muscular/bone system

39

moving oxygen and nutrients through an organisms whole body

circulatory system

40

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

respiratory system

41

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

digestive system

42

to dispose of liquid nitrogenous waste

excretory system