intro to animals (exam3)

Question 1

Are fungi heterotrophs or autotrophs?

Answer 1

heterotrophs

Question 2

What is the difference in the way fungi vs animals break down food?

Answer 2

fungi break down food before consumption, while animals break down food after consumption

Question 3

choanoflagellates are ____ protists, some are _____

Answer 3

-sensile
-colonial

Question 4

How do choanoflagellates feed?

Answer 4

sticking a flagella into the water column to collect food particles

Question 5

sponges are ____, ______ animals

Answer 5

-multicellular
-sensile

Question 6

How do sponges feed?

Answer 6

they stick out a bunch of flagella to collect food particles

Question 7

Sponges have an ____ for structural support.

Answer 7

-extracellular matrix

Question 8

A few lineages of sponges have ____. Which is ____.

Answer 8

-epithelium
-real tissue

Question 9

Are animals a monophyletic group?

Answer 9

yes

Question 10

About how many lineages of animal phyla are currently recognised?

Answer 10

30-35

Question 11

Diploblasts

Answer 11

tissues from 2 embryonic germ layres

Question 12

Triploblasts

Answer 12

tissues from 3 embryonic germ layers

Question 13

endoderm

Answer 13

inside tissue

Question 14

mesoderm

Answer 14

middle tissue

Question 15

ectoderm

Answer 15

outside tissue

Question 16

radial symmetry

Answer 16

symmetry around a central access

Question 17

bilateral symmetry

Answer 17

symmetry down the middle

Question 18

Bilateral symmetry did not evolve all at once in the _____. Some components evolved ____.

Answer 18

-cambrian explosion
-earlier

Question 19

cephalization

Answer 19

the nerves and sense organs all concentrate at one end of an organism

Question 20

What is the difference between the nerve net and the central nervous system?

Answer 20

the nerve net has a random spread of nerves throughout the organism. the central nervous system follows and organised path an condenses at one end.

Question 21

coelom

Answer 21

body cavity filled with mesoderm

Question 22

The skin and nervous system develop from the ____.

Answer 22

ectoderm

Question 23

The muscles and organs develop from the ____.

Answer 23

mesoderm

Question 24

The gut (digestive tract) develops from the ____.

Answer 24

endoderm

Question 25

Coelomates have an enclosed ____ completely lined with _____ derived tissue.

Answer 25

-coelom
-mesodermally

Question 26

Acoelomates have no enclosed ____.

Answer 26

coelom

Question 27

Pseudocoelomates have an enclosed ____ partially lined with ____ derived tissue.

Answer 27

-coelom
-mesodermally

Question 28

Blastospore

Answer 28

the first opening in the embryo

Question 29

In deuterostomes the ____ develops before the ____.

Answer 29

-anus
-mouth

Question 30

In protostomes the ____ develops before the ____ (for the most part).

Answer 30

-mouth
-anus

Question 31

Animal life cycles are normally ____ dominant.

Answer 31

diploid

Question 32

metamorphosis

Answer 32

a common, drastic change of form from one developmental stage to another