Chapter A11. L’evoluzione degli animali e dell’uomo #108794

Birds

Which of the following is a unique characteristic of birds compared to other living vertebrates?

A:

Feathers

B:

Ability to lay eggs that will not dry out

C:

Flight

D:

requiring an enormous amount of parental care

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Mammals

Which trait is unique to mammals?

A:

Secretion of a fluid (milk) from mammary glands

B:

Endothermy (internal heat production)

C:

Possession of an amniotic egg

D:

The ability among certain members of the group to fly

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Acoelomate and coelomate

The terms "acoelomate" and "coelomate" refer to

A:

the origin of the blastopore

B:

ectoderm, mesoderm, and endoderm, respectively

C:

the vertebrate body plan

D:

the body cavity of animals

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Heat retention in vertebrates

Which of the following features both allow for heat retention in a vertebrate?

A:

Feathers of birds and fat of cetaceans

B:

Fur of mammals and leathery skin of sharks

C:

Leathery skin of sharks and fat of cetaceans

D:

Fur of mammals and watertight skin of reptiles

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The chordate lineage

Which of the following features is not found in the chordate lineage?

A:

External skeleton

B:

Dorsal hollow nerve cord

C:

Notochord at some stage of development

D:

Pharyngeal slits at some stage of development

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Echinoderms

Which of the following is not a characteristic of echinoderms?

A:

An external skeleton of chitin

B:

An internal skeleton of calcified plates

C:

A water vascular system

D:

A water vascular system

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Cnidarians

Cnidarians have the type of symmetry known as _______ symmetry.

A:

radial

B:

asymmetrical

C:

spherical

D:

axial

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The embryo

The contents of the _______ gets smaller in size as the embryo grows.

A:

yolk

B:

amnion

C:

shell

D:

allantois

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Sponges

Which of the following statements about sponges is false?

A:

Their tissues are organized into distinct organs

B:

Their body plan consists of an aggregation of cells built around a water canal system

C:

They are sessile organisms

D:

They are the simplest animals

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Sessile organisms

Which of the following feeding strategies is most likely to be associated with a sessile organism?

A:

Filter feeding

B:

Parasitism

C:

Detritus feeding

D:

Predation

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