Unit 4 Exam Review

Sea otters are more closely related to polar bears than seals. True False

True

Cephalopods, invertebrate nektons, include which of the following animals? A. squid B. nautilus C. octopus D. cuttlefish E. all of the above

E

Flowering, multicellular, vascular marine plants are called _________. A. seaweed B. phytoplankton C. algae D. HABs E. angiosperms

E

Which of the following is NOT one of the characteristics of photosynthesizing phytoplankton? A. generate large amounts of atmospheric oxygen B. critical part of the food web C. are mostly microscopic D. live in the photic zone of the ocean E. are vascular

E

Sea lions have a strealined head with no external ear flaps. True False

False

Most biological primary productivity in the ocean occurs in the euphotic zone. True False

True

A starfish is considered a _______ organism. A. benthic B. pelagic

A

All of the following are cetacean adaptations EXCEPT _________. A. ectothermy B. modified respiratory system to collect and retain large amounts of oxygen C. mammary glands D. streamlined body shape

A

The main inorganic nutrients necessary for the success of marine autotrophs are __________. A. nitrogen and phosphorus B. carbon dioxide and carbohydrates C. phosphorus and carbohydrates D. nitrogen and carbohydrates E. glucose and oxygen

A

The symbiotic dinoflagellate that lives within coral tissue is called ____________. A. zooxanthellae B. kelp C. <i>Riftia</i> D. polyp

A

What kind of mechanism to regulate metabolic rate do marine mammals have? A. Endothermic B. Exothermic C. Ectothermic D. None of these choices.

A

Which is considered a benthic algae? A. seaweed B. diatoms C. sea grass D. mangroves

A

Which organism distribution pattern is most common in benthic organisms? A. clumped B. uniform C. bilateral D. random

A

Animals that are attached to the bottom are called ___________. A. interstitial B. sessile C. motile D. infaunal

B

Bony fish (like tuna or anchovies) are members of this group, __________. A. Chondrichthyes B. Osteichthyes C. Chelonia D. Mammalia E. Agnatha

B

Dissolved gases are necessary for photosynthesis and respiration. Polar surface waters can sustain more organisms because the amount of dissolved gases in seawater _________ with __________ water temperature. A. decreases; colder B. increases; colder C. stays the same; colder D. increases; warmer E. stays the same; warmer

B

Mangroves are mostly found along low and muddy coasts in _______ regions. A. temperate and polar B. tropical and subtropical C. polar D. temperate

B

Most marine organisms have an internal temperature very close to that of their surroundings. They are known as ____________ organisms. A. holothermic B. ectothermic C. endothermic D. exthermic

B

Nekton are organisms that _________. A. drift with the currents B. are active swimmers C. have defined necks D. live in the benthic environment E. are autotrophs

B

Organisms that spend their life freely swimming in the open ocean are considered to be _______ organisms. A. abyssal B. pelagic C. littoral D. benthic E. bathyal

B

The Great White Shark's scientific name is Carcharodon carcharias. Carcharius is its ________ name. A. genus B. species C. family D. order E. class

B

Whales that have baleen plates instead of teeth are _________. A. pinnipeds B. mysticeti C. odontoceti D. sirens E. chelonians

B

Which of the following is NOT a cartilaginous fish? A. rays B. tuna C. skates D. chimaera E. sharks

B

Which of the following is NOT a characteristic of a marine angiosperm? A. possess roots B. nonvascular C. vascular D. in the Plantae kingdom E. flowering

B

Which of the following organisms does not belong to the class Mammalia? A. sea otters B. sharks C. sea lions D. manatees E. seals F. whales

B

A marine ectotherm is generally ___________ and has an internal temperature ______________. A. warm-blooded; that remains fairly stable no matter what the outside temperature B. warm-blooded; that is similar to the outside temperature C. cold-blooded; that is similar to the outside temperature D. cold-blooded; that remains fairly stable no matter what the outside temerature

C

A model for the feeding relationships among organisms with the top consumers at the top and the primary producers at the bottom and the relative biomass at each level is known as a ____________. A. producer/consumer indicator B. food scale C. trophic pyramid D. feeding diagram

C

Benthic organisms live _________. A. suspended in the water column B. by drifting through the water, unable to swim against currents C. on or associated with the seafloor D. as parasites

C

One of Earth's most rigorous habitats is a ___________. A. kelp forest B. rocky intertidal C. sand beach D. coral reef

C

Plant-like drifting organisms are ______. A. holoplankton B. ultraplankton C. phytoplankton D. meroplankton E. zooplankton

C

Seaweeds in the Phylum Chlorophyta are green because they lack ________. A. chlorophyll B. cells with nuclei C. accessory pigments D. chloroplasts E. the ability to do photosynthesis

C

Teleosts are _______ fish. A. lobe-finned, cartilaginous B. ray-finned, jawless C. ray-finned, bony D. ray-finned, cartilaginous E. lobe-finned, bony F. lobe-finned, jawless

C

Which of the following groups contains the largest number of living species of vertebrates? A. Superclass Agnatha B. Class Chondrichthyes C. Superclass Osteichthyes D. Order Sirenia E. Class Mammalia

C

Which of the following is a type of angiosperm found in some marine environments? A. dinoflagellates B. diatoms C. sea grass D. seaweed E. copepods

C

Which of the following is not a marine reptile? A. Atlantic Leatherback Turtle B. Saltwater Crocodile C. Dugong D. Yellow-bellied Sea Snake E. Green Sea Turtle

C

A marine mammal is NOT ________? A. endothermic B. a vertebrate C. a nekton D. an invertebrate

D

Chemosynthetic primary producers need ________ to produce carbohydrates. A. moonlight B. heterotrophs C. sunlight D. energy-rich inorganic molecules E. nitrogen-rich water

D

The key characteristic of fish in the Superclass Agnatha is their ________. A. worldwide abundance B. bony skeleton C. cartilaginous skeletons D. lack of jaws E. paired dorsal fins

D

What is the purpose of accessory pigments in seaweeds? A. to make them look pretty B. to assist in keeping the seaweed erect in the water column C. to fix carbon dioxide D. to help capture the energy from the sun at deeper depths

D

Which of the following groups includes the largest algae? A. Euphasia B. Rhotophyta C. Chlorophyta D. Phaeophyta E. Cyanea

D

Which of the seaweeds can be found in the deepest, and therefore dimmest, of coastal waters? A. brown seaweeds B. mangroves C. green seaweeds D. red seaweeds

D

Which of these statements is FALSE concerning estuaries? A. Estuaries are in danger of development and pollution. B. Estuaries are places where saltwater and fresh water meet. C. Larvae are often abundant there. D. Very few autotrophs live in estuaries, but many animals can be found there.

D

___________ is the synthesis of organic material from inorganic substances by photosynthesis or chemosynthesis. A. Autotrophic metabolism B. Synthroidic evolution C. Heterotrophism D. Primary production E. Consumer index

D

Which of the following is NOT part of the benthic community? A. estuaries B. hydrothermal vents C. rocky intertidal zones D. the littoral zone E. the abyssal plains F. coral reefs G. kelp forests H. salt marshes I. the oceanic zone

I