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Biology > Bio 170 Exam 4 > Flashcards

Bio 170 Exam 4 Flashcards

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1
Q

Name a couple characteristics of animals

A

Multicellular
Heterotrophic
Life cycle = diplomatic

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2
Q

What is gastrulation?

A

Blastula folds in and makes a space within a space. Two regions of cells.

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3
Q

What are the earliest animal fossils?

A

635 mya

Ediacara fauna

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4
Q

Name the two types of body symmetry.

A

Radial

Bilateral

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5
Q

Define germ tissue.

A

Relatively unspecified tissues at gastrulation give rise to more specialized tissues

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6
Q

True or false. Animals that are radially symmetric are triploblastic.

A

False. Radially symmetric animals are all diploblastic.

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7
Q

What are the three body cavities of triploblastic animals?

A

Coelomate
Pseudocoelomate
Acoelomate

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8
Q

What is coelomate?

A

Body cavity lined by tissues derived from mesoderm.

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9
Q

What is pseudocoelomate?

A

Body cavity lined by tissue derived from mesoderm and by tissue derived from endoderm

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10
Q

What is acoelomate?

A

Lack of body cavity

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11
Q

What is protostomal?

A

Blastopore develops into mouth

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12
Q

What is deuterostomal?

A

Blastospore develops into an anus

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13
Q

What are the most primitive metazoans?

A

Sponges. (Poriferans)

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14
Q

True or False. Sponges lack tissue organization body symmetry and organs

A

True.

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15
Q

What is unique to sponges?

A

Choanocytes. Flagellated feeding cell also called a collared cell.

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16
Q

Name the two phylums of radial symmetric animals.

A

Cnidaria

Ctenophora

17
Q

Name the four classes of Cniderians.

A

Hydrozoa
Scyphozoa
Cubozoa
Anthozoa

18
Q

How do cnidarias feed?

A

Using tentacles with cnidocytes

19
Q

What are the three classes of phylum Platyhelminthes?

A

Turbellaria
Trematoda
Cestoda (tapeworms)

20
Q

What causes schistomiasis?

A

Trematoda

21
Q

What is parthenogenesis and what phylum does it?

A

A form of asexual reproduction eggs develop into embryos without fertilization.

Rotifera.

22
Q

What are the four classes of mollusca?

A

Polyplacophora
Gastropoda
Bivalvia
Cephalopoda

23
Q

What is the most diverse major animal group?

A

Ecdysozoa. Because of anthropods

24
Q

What is the most abundant type of animal?

A

Nematods

25
Q

What causes root knot?

A

Nematods

26
Q

Name the unifying features of anthropods

A

Segmentation
Exoskeleton
Jointed appendages

27
Q

What are the subphyla of anthropods?

A

Chelicerata
Myriapoda
Hexapoda
Crustaceans

28
Q

What are chelicerata distinguished by?

A

Chelicerae. Fang/pinchers

29
Q

What phyla do horseshoe crabs belong to?

A

Chelicerata.

30
Q

Animals are members of what Supergroup?

A

Unikonta.

Biology (5 decks)

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