12 Jun UMUC BIOLOGY 181- LIFE IN THE OCEANS
Question
BIOLOGY 181 LIFE IN THE OCEANS
UMUC FALL 2016
QUIZ 2
Directions: Submit the answer sheet to your Assignment Folder NO LATER than 11:59 PM
Sunday 18 October 2015. Submit ONLY the answer sheet.
1. The regulation of salt and water balance in an organism is called:
a. Homeostasis
b. Homeothermy
c. Ophiolatry
d. Osmoregulation
e. Thermoregulation
2. The development of functional male sex organs followed by the development of functional
female sex organs is called:
a. Protandry
b. Protapsis
c. Proteomics
d. Protogyny
e. Protospongia
3. Many fish have light-colored ventral surfaces and dark-colored dorsal surfaces. This is called:
a. Aggressive mimicry
b. Aposematic coloration
c. Batesian mimicry
d. Countershading
e. Mullerian mimicry
4. The development of analogous structures is called:
a. Convergent evolution
b. Disruptive selection
c. Punctuated equilibrium
d. Sexual selection
e. Stabilizing selection
5. The type of caudal fin found in sharks is called:
a. Diphycercal
b. Heterocercal
c. Homocercal
d. Hyocercal
e. Protocercal
6. The closest living relative of whales and dolphins is the:
a. Elephant
b. Hippotamus
c. Manatee
d. Shark
e. Walrus
7. All of these characteristics distinguish mammals from reptiles except:
a. Beta-keratin
b. Endothermy
c. Hair
d. Heterodonty
e. Lactation
8. The swim bladder of fishes is derived from the lung
a. True
b. False
9. In the late nineteenth century, the northern sea elephant was driven almost to extinction. The
species still survives, but it has lost virtually all of its genetic diversity. This is an
example of:
a. Directional selection
b. Disruptive selection
c. Genetic drift
d. Mutation
e. Sexual selection
10. One of the reasons cetaceans are able to remain underwater for long periods of time is
because their muscles contain large quantities of ________________, a protein which
stores oxygen.
a. Collagen
b. Hemerythrin
c. Myoglobin
d. Myosin
e. Tropomyosin
11. Organisms which can tolerate a wide range of salinity are called:
a. Euryhaline
b. Homeotherms
c. Osmoconformers
d. Osmoregulators
e. Stenohaline
12. The symbiotic algae found in coral reefs are referred to as:
a. Alveolates
b. Coccolithophorids
c. Foraminifera
d. Radiolaria
e. Zooxanthellae
13. The coral polyp is a member of the class:
a. Anthozoa
b. Demospongia
c. Foraminifera
d. Hexactinellida
e. Radiolaria
14. Organisms whose body fluid has an osmolarity equal to that of the surrounding medium are
called:
a. Ectotherms
b. Endotherms
c. Osmoconformers
d. Osmoregulators
e. Stenohaline
15. All of these are adaptations intertidal mollusks display for coping with low temperatures
EXCEPT:
a. Anti-freeze compounds
b. Compact body form
c. Dark color
d. Ridged shells
16. The extent of coral reefs in the Caribbean declined dramatically in the wake of the nearextinction of this species:
a. Crown-of-thorns starfish
b. Diadema antillarum
c. Mantis shrimp
d. Mytilus californianus
e. Pisaster ochraceus
17. Similarity due to common ancestry is called:
a. Analogy
b. Convergent evolution
c. Homeothermy
d. Homeostasis
e. Homology
18. The reptiles, birds, and mammals all are distinguished from the amphibians by the possession
of this feature:
a. Amniotic egg
b. Beta-keratin
c. Endothermy
d. Feathers
e. Lactation
19. Coral reefs in the Indo-Pacific region are threatened by this species:
a. Crown-of-thorns starfish
b. Diadema antillarum
c. Mantis shrimp
d. Mytilus californianus
e. Pisaster ochraceus
20. Animals that ingest sediment and digest organic material are called:
a. Autotrophs
b. Deposit feeders
c. Endotherms
d. Filter feeders
e. Homeotherms
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