Chapter 27

Question 1

What defines an animal

Answer 1

Multicellularity, Heterotrophy, and Motility

Question 2

Orginization of like mnemonic

Answer 2

King Philip Came Over For Good Spaghetti

Question 3

Radial Symmetry Exmaple

Answer 3

Jellyfish

Question 4

Bilaterial symmetry example

Answer 4

Butter fly

Question 5

Choanoflagellates

Answer 5

Closest related relatives to sponges which is considered the first animal

Question 6

Ctenophores

Answer 6

More known as jellyfish

Question 7

Protosomes

Answer 7

Mouth before anus, “first mouth”

Question 8

Lophotrochozoans

Answer 8

mollusks, flatworms, ring strucutres

Question 9

Ecdysozoans

Answer 9

arthropods; shed to grow

Question 10

Deutrostomes

Answer 10

Develop anus before mouth; echinoderms and chordates

Question 11

.

Answer 11

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Question 12

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Answer 12

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Question 13

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Answer 13

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Question 14

Diploblasts

Answer 14

2 embyronic tissues (Ectoderm, Endoderm)

Question 15

Triploblasts

Answer 15

3 embyronic tissues (Ectoderm, Endoderm, Mesoderm)

Question 16

Ectoderm

Answer 16

Skin, nervous system

Question 17

Endoderm

Answer 17

Digestive tract

Question 18

Mesoderm

Answer 18

Circulatory, muscles, structures

Question 19

Non-living layer

Answer 19

Only in diploblastic species

Question 20

Coelom

Answer 20

A part of the embryo that is responsible for developing body cavities

Question 21

3 types of coelom presence in embryos

Answer 21

Acoelomate, Eucoelomate, Pseudocoelmate

Question 22

Acoelomate

Answer 22

No coelm, flatworms

Question 23

Eucoelomate

Answer 23

Body cavities, arthropods

Question 24

Coelom

Answer 24

A part of the embryo that is responsible for developing body cavities. A fuild filled cavity between tubes

Question 25

Homeotic genes

Answer 25

A catch all term for genes that do cool thnags

Question 26

Things that homeotic genes do

Answer 26

Specilization of cell type
Regulation of growth
Adhesion to other cells
Recognition of harmful things (immunity)
Developmental signaling
Apoptosis

Question 27

Hoxgenes

Answer 27

Regulate development of anterior-posterior axis, cause biliteracy

Question 28

How did the nervous system develop?

Answer 28

The nervous system develop because processing outside stimuli and reacting to them present an evolutionary advantage.

Question 29

What doesn’t have nerve cells

Answer 29

Sponges

Question 30

Tyoes of nervous systems

Answer 30

Nerve nets, central nervous systems

Question 31

ganglia

Answer 31

Nerve clusters found in central nervous system

Question 32

Cnidarians and Ctenophores have what nervous system

Answer 32

Nerve net

Question 33

Cnidarians

Answer 33

sea annemoies

Question 34

Cerebral ganglion

Answer 34

Science term for brain

Question 35

Cephalization

Answer 35

the evolution of the head

Question 36

Why did organisms Cephalize

Answer 36

Same reasons why nervous system develop, better than nerve nets

Question 37

4 stratgies for feeding

Answer 37

Suspension, Deposit feeding, Fluid feeding, Mass feeding

Question 38

Suspension feeding

Answer 38

Filters food from water/air

Question 39

Deposit feeding

Answer 39

digests organic matter in sediments

Question 40

Segmentation

Answer 40

divison of body into similar structures

Question 41

How hox genes affect segmentation

Answer 41

changes in hox genes can produce novel #s, shapes and sizes

Question 42

Vertebrates v Invertebrates

Answer 42

Segmentation by back bone v. Conspicous segmentation

Question 43

3 Types of reproduction

Answer 43

Asexual reproduction, Internal fertilization, External reproduction

Question 44

Types of embryonic development in internal fertilization

Answer 44

viviparous, oviparous, ovoviviparous

Question 45

viviparous

Answer 45

live birth (humans)

Question 46

oviparous

Answer 46

Egg brith (chicken)