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Biology 2 > Chapter 32: Animal Diversity Summary > Flashcards

Chapter 32: Animal Diversity Summary Flashcards

1
Q

Groups of similar cells that act as functional unit

A

Tissues

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2
Q

Multicellular eukaryotes

A

Animals

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3
Q

A succession of cell division without growth between divisions

A

Cleavage

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4
Q

Cleavage lads to formation of a _________, often in the room of a hollow ball of cells

A

Blastula

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5
Q

The blastula undergoes ___________; forming a gastrula

A

Gastrulation

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6
Q

Formed during gastrulation with different layers of embryonic tissues

A

Gastrula

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7
Q

Is sexually immature and morphologically and behaviorally distinct from the adult stage

A

Larva

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8
Q

After this process, larvae become juvenile that resemble adults but are sexually immature

A

Metamorphosis

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9
Q

Unique family of regulatory genes of animals

A

Hox genes

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10
Q

Bilaterally symmetrical form

A

Bilaterians

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11
Q

Complete digestive tract

A

Bilaterians

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12
Q

Efficient digestive system with a mouth and anus at opposite ends

A

Bilaterians

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13
Q

Often sessile or planktonic (drifting or weakly swimming)

A

Radial symmetry

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14
Q

Lack symmetry

A

Sponges

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15
Q

Move actively and have a CNS

A

Bilateral animals

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16
Q

Body parts arranged around a single central axis

A

Radial symmetry

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17
Q

Imaginary slice through the central axis divides the animal into mirror images

A

Radial symmetry

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18
Q

Body parts are arranged around 2 axes of orientation (head-tail and dorsal-ventral)

A

Bilateral symmetry

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19
Q

Only 1 imaginary slice divides the animal into mirror image halves, right and left side

A

Bilateral symmetry

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20
Q

Covers the body’s surface

A

Ectoderm

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21
Q

Outer covering and CNS

A

Ectoderm

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22
Q

Innermost layer

A

Endoderm

23
Q

Lines the archenteron

A

Endoderm

24
Q

Blind pouch that will form the gut

A

Archenteron

25
Q

Lining of the digestive tract and organs

A

Endoderm

26
Q

Cnidarians are an example of this kind of animal

A

Diploblastic

27
Q

Have only endoderm and ectoderm

A

Diploblastic animals

28
Q

Bilaterally symmetrical animals are an example of

A

Triploblastic animals

29
Q

Ectoderm, endoderm, and mesoderm

A

Triploblastic animals

30
Q

Fills the space between ectoderm and endoderm

A

Mesoderm

31
Q

Gives rise to muscles and most organs

A

Mesoderm

32
Q

Contain a body cavity

A

Triploblastic animals

33
Q

A fluid- or air-filled space between the digestive tract and the outer body wall

A

Body cavity

34
Q

Cushions and suspends organs

A

Internal fluid

35
Q

Body cavity surrounded by tissue derived from mesoderm

A

Coelom

36
Q

Body cavity formed between the mesoderm and endoderm

A

Hemocoel

37
Q

A fluid in Hemocoel that transports nutrients and waste throughout the body cavity

A

Hemolymph

38
Q

Spiral cleavage and determinate cleavage

A

Protostome development

39
Q

Radial and indeterminate cleavage

A

Deuterostome development

40
Q

The planes of cell division are diagonal to the vertical axis of the embryo

A

Spiral cleavage

41
Q

Rigidly determines the developmental fate of each embryonic cell very early

A

Determinate cleavage

42
Q

The planes of division are either parallel or perpendicular to the embryo’s vertical axis

A

Redial cleavage

43
Q

Each cell produced by early cleavage is able to form a complete embryo

A

Indeterminate cleavage

44
Q

Splitting of solid masses of mesoderm forms the coelom

A

Protostome development

45
Q

Mesoderm buds from the wall of the archenteron to form the coelom

A

Deuterostome development

46
Q

An indentation in the gastrula that leads to the formation of the archenteron

A

Blastopore

47
Q

Blastopore becomes the mouth

A

Protostome development

48
Q

Blastopore become the anus

A

Deuterostome development

49
Q

“True animals”; all animals except for sponges and few other belong to

A

Eumetazoans

50
Q

Most bilaterians are

A

Invertebrates

51
Q

What are the 3 clades of Bilaterians

A

Deuterostomia
Ecdysozoans
Lophotrochozoa

52
Q

A crown of ciliated tentacles used for feeding

A

Lophophore

53
Q

Developmental stage in molluscs and annelids

A

Trochophore larva

Biology 2 (33 decks)

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