SC160 Lesson 7 Exam SCORE 95 PERCENT

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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?

https://courses.ashworthcollege.edu/content/enforced/8586-SC160_20_1/v9/Images/exam7-15.jpg?_&d2lSessionVal=Be0ZK7JzPJ9CJH3B9WLI1c19b

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:

https://courses.ashworthcollege.edu/content/enforced/8586-SC160_20_1/v9/Images/exam7-30.jpg?_&d2lSessionVal=Be0ZK7JzPJ9CJH3B9WLI1c19b

Question 20 options:

  


chordates.

 


arthropods. (Incorrect)

 


molluscs.

  

echinoderms.

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