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.