Exam 7 SC160
Question 1 (5 points)

What characteristic is unique to echinoderms?

Question 1 options:

A lack of segmentation

A water vascular system

Suction-cup-like feet

Larvae with bilateral symmetry

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Question 2 (5 points)

Rays are a type of:

Question 2 options:

tunicate.

cartilaginous fish.

jawless fish.

bony fish.

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Question 3 (5 points)

Nearly all __________ are aquatic.

Question 3 options:

crustaceans

arachnids

flatworms

roundworms

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Question 4 (5 points)

Unique features of vertebrates include the presence of a(n):

Question 4 options:

endoskeleton.

notochord.

skull and backbone.

pharyngeal slit.

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Question 5 (5 points)

Why are bryophytes considered incompletely liberated from their ancestral aquatic habitat?

Question 5 options:

Their embryos do not develop   within gametangia.

Their sperm are flagellated.

The gametophyte generation is   dominant.

They lack a cuticle.

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Question 6 (5 points)

The first hominid to spread beyond Africa was:

Question 6 options:

"Lucy".

<i>Australopithecus   afarensis.</i>

<i>Homo erectus.</i>

<i>Homo   neanderthalensis.</i>

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Question 7 (5 points)

How do New World monkeys differ from Old World monkeys?

Question 7 options:

New World monkeys have a   prehensile tail.

New World monkeys have enhanced   depth perception.

Old World monkeys are arboreal.

New World monkeys have nails; Old   World monkeys have claws.

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Question 8 (5 points)

What important role do fungi play in many ecosystems?

Question 8 options:

They decompose organic material.

They pollinate plants.

They disperse the fruits of   angiosperms.

They perform photosynthesis

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Question 9 (5 points)

The function of a mushroom is to:

Question 9 options:

produce seeds.

store nutrients.

produce spores.

absorb food.

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Question 10 (5 points)

The mobile stage of the cnidarian life cycle is the __________ stage.

Question 10 options:

instar

polyp

tadpole

medusa

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Question 11 (5 points)

__________, a chemical that hardens cell walls and supports terrestrial plants, is found in all plants EXCEPT __________.

Question 11 options:

Lignin; bryophytes

Cellulose; bryophytes

Calcium carbonate; ferns

Lignin; ferns and bryophytes

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Question 12 (5 points)

Like plants, fungi have __________; however, in plants they are composed of __________, whereas in fungi they are composed of __________.

Question 12 options:

cell walls; cellulose; chitin

cell walls; cellulose;   peptidoglycan

cell membranes; phospholipids;   peptidoglycan

cell walls; phospholipids;   cellulose

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Question 13 (5 points)

Which of these human characteristics evolved first?

Question 13 options:

Enlarged brain

Erect posture

Language

Loss of body hair

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Question 14 (5 points)

What is this organism?

Question 14 options:

Fern

Fungus

Bryophyte

Gymnosperm

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Question 15 (5 points)

Which of these adaptations to a terrestrial existence evolved most recently?

Question 15 options:

Vascular tissue

Seeds

Gametangia

Cuticle

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Question 16 (5 points)

Why are ferns considered incompletely adapted to the terrestrial environment, when compared with other plants?

Question 16 options:

They lack vascular tissue.

Their sperm are flagellated.

The gametophyte generation is   dominant.

They lack gametangia.

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Question 17 (5 points)

A true coelom is:

Question 17 options:

completely lined with tissue   derived from endoderm.

completely lined with tissue   derived from mesoderm.

formed when a zygote develops into   a blastula.

completely lined with tissue   derived from ectoderm.

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Question 18 (5 points)

What are hyphae?

Question 18 options:

Symbiotic associations between   plant roots and fungi

Threadlike filaments that make up   fungal bodies

Fungal reproductive structures

Fungal spores

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Question 19 (5 points)

Where did humans first appear?

Question 19 options:

South America

Africa

Asia

Europe

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Question 20 (5 points)

Annelids are most closely related to:

Question 20 options:

chordates.

arthropods. (Incorrect)

molluscs.

echinoderms.