Flashcards in Animal Characteristic (8.7) Deck (42)
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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
