Sc160 lesson 7 exam score 95 percent

  

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

Save

Question 2 (5 points)

Rays are a type of:

Question 2 options:

  

tunicate.

 

cartilaginous fish.

 

jawless fish.

 

bony fish.

Save

Question 3 (5 points)

Nearly all __________ are aquatic.

Question 3 options:

  

crustaceans

 

arachnids

 

flatworms

 

roundworms

Save

Question 4 (5 points)

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

Question 4 options:

  

endoskeleton.

 

notochord.

 

skull and backbone.

 

pharyngeal slit.

Save

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.

Save

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>

Save

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.

Save

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

Save

Question 9 (5 points)

The function of a mushroom is to:

Question 9 options:

  

produce seeds.

 

store nutrients.

 

produce spores.

 

absorb food.

Save

Question 10 (5 points)

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

Question 10 options:

  

instar

 

polyp

 

tadpole

 

medusa

Save

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

Save

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

Save

Question 13 (5 points)

Which of these human characteristics evolved first?

Question 13 options:

  

Enlarged brain

 

Erect posture

 

Language

 

Loss of body hair

Save

Question 14 (5 points)

What is this organism?

Question 14 options:

  

Fern

 

Fungus

 

Bryophyte

 

Gymnosperm

Save

Question 15 (5 points)

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

Question 15 options:

  

Vascular tissue

 

Seeds

 

Gametangia

 

Cuticle

Save

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.

Save

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.

Save

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

Save

Question 19 (5 points)

Where did humans first appear?

Question 19 options:

  

South America

 

Africa

 

Asia

 

Europe

Save

Question 20 (5 points)

Annelids are most closely related to:

Question 20 options:

  

chordates.

 

arthropods. (Incorrect)

 

molluscs.

  

echinoderms.