BSC 116 Exam II

1.

1 point

Early, non-mammalian synapsids were characterized by:

single temporal fenestra in skull structure

all of these answers

sprawling, crocodilian gait

egg-laying

2.

1 point

Humans are most closely related to:

Old World monkeys

New World monkeys

chimpanzees and other apes

opossums

3.

1 point

The animal kingdom is monophyletic (coming from one common ancestor).

True

False

4.

1 point

What key evolutionary innovation best allowed Sarcopterygii to transition from aquatic to terrestrial life?

hair

feathers

upright ambulation

amniotic egg

5.

1 point

Which are examples of structures that increase surface area to volume ratio?

capillaries in lungs

villi in the small intestine

long narrow blood vessels in kidneys

all of these answers

6.

1 point

Which trait distinguishes tetrapods from the non-tetrapod animal groups?

upright ambulation

differentiated teeth

amniotic egg

limbs with digits

7.

1 point

The endocrine system's effects are _____, while the nervous system's effects are ______.

long-lasting; momentary & fade quickly

long-lasting; long-lasting

hard to control; easy to control

momentary & fade quickly; long-lasting

8.

1 point

Which trait distinguishes gnathostomes from non-gnathostome animal groups?

Jaws

Mutualism with bacteria

Complete gut

Gills

9.

1 point

Feathers evolved before flight. Why?

all of these answers

coloration for camouflage

insulation

coloration for courtship

10.

1 point

Which group is NOT a part of Sarcopterygii?

lobe-finned fishes

sharks

amphibians

humans

11.

1 point

The two major clades of extant amniotes are:

birds and synapsids

reptiles and synapsids

parareptiles and reptiles

12.

1 point

Which group is matched correctly with its feature(s)?

Cnidaria: has bilateral symmetry & complete gut

Annelida: has gastrovascular cavity; diploblastic

Porifera: filter-feeds by spongocele & lacks true tissue

Platyhelminthes: has complete gut

13.

1 point

_____ lack true tissues. ______ are diploblastic.

Porifera, Cnidaria

Cnidaria, Porifera

14.

1 point

Which of the three extant clades of modern mammals are classified by a pouch for offspring?

marsupials

monotremes

eutherians

15.

1 point

Exchange of materials between cell and surrounding environment is most effective when surface area:volume ratio is high.

True

False

16.

1 point

Animals are most closely related to which of the following protists?

choanoflagellates

amoebas

choanocytes

kelps

17.

1 point

Until 28,000 years ago, Homo neanderthalensis and H. sapiens co-occurred in Europe.

True

False

18.

1 point

Which organ system is correctly matched with its function?

digestive: signaling

skin: protection

skeletal: movement

muscular: support

19.

1 point

Which tissue system is incorrectly matched with function?

nervous: translate stimuli into nerve impulses

connective: bind & support other tissues

muscle: involuntary movement ONLY

epitheleal: line surfaces to prevent against injury, dehydration, infection

20.

1 point

Birds share the closest common ancestor with Saurishian dinosaurs.

True

False