Archive for May 2017

Competition can occur _____.

Competition can occur _____.



a. only within a single population
b. only between different populations
c. only between similar species
d. only between different communities
e. between populations or within a single population






Answer: E

What is the relationship between population and community?

What is the relationship between population and community?




a. Populations exist in the ocean; communities exist on land.
b. Communities make up a population.
c. Communities exist in the ocean; populations exist on land.
d. Populations and communities both live in the ocean.
e. Populations make up a community.





Answer: E

Where is the largest marine community located?

Where is the largest marine community located?



a. on the continental shelf
b. near hydrothermal vents
c. in the deep open-ocean
d. along the eastern coasts of continents
e. along the western coasts of continents






Answer: C

Why are marine mammals relatively large?

Why are marine mammals relatively large?



a. They are heavy.
b. They can be top predators.
c. They can move faster.
d. They lose less body heat through their skin.
e. Larger animals are more streamlined.





Answer: D

What is the function of salt glands in marine reptiles?

What is the function of salt glands in marine reptiles?



a. They bring salt into body cells.
b. They concentrate and excrete excess salt from body fluids.
c. They allow reptiles to breathe under water.
d. They allow reptiles to swim in salt water.
e. They produce extra salt in body fluids.





Answer: B

All fish species have _____.

All fish species have _____.



a. gills for breathing
b. skeletons made of cartilage
c. stinging cells
d. skeletons made of bone
e. highly developed eyesight





Answer: A

Why is striated muscle an evolutionary advancement of arthropods?

Why is striated muscle an evolutionary advancement of arthropods?




a. It cannot be digested by predators.
b. It is lighter than primitive muscle.
c. It is maneuverable.
d. It must be contained within an exoskeleton.
e. It makes rapid movement possible.





Answer: E

Porifera use _____ to digest food.

Porifera use _____ to digest food.




a. a flow-through digestive system
b. individual digestive cells
c. cnidoblasts
d. polyps
e. flagellated cells





Answer: B

What prey detection capability do toothed whales have?

What prey detection capability do toothed whales have?




a. astute sense of smell
b. sharp eyesight
c. keen taste sensors
d. Ability to detect internal body heat
e. Echolocation





Answer: E

Why can algal blooms be dangerous?

Why can algal blooms be dangerous?



a. Algae produce methane.
b. dinoflagellates use up needed oxygen
c. Too much algae can limit photosynthesis.
d. Too much algae causes pollution.
e. Some dinoflagellate species synthesize toxins.





Answer: E

Compensation depth is always below the _____.

Compensation depth is always below the _____.



a. intermediate bottom waters
b. aphotic zone
c. depth of greatest productivity
d. oxygen minimum zone
e. depth of light penetration






Answer: C

What limits productivity at high latitudes?

What limits productivity at high latitudes?



a. Upwelling
b. High sun angle
c. Low sun angle
d. High surface salinity
e. Darkness of water





Answer: C

How do accessory pigments in seaweeds work?

How do accessory pigments in seaweeds work?



a. They act independently from chlorophyll to produce carbohydrates.
b. They replace chlorophyll in the photosynthetic cycle.
c. They produce carbohydrates through chemosynthesis.
d. They allow chlorophyll to absorb different wavelengths of light.
e. They absorb dim blue light and transfer the energy to chlorophyll molecules.






Answer: E

How do mangrove root systems help stabilize deltas?

How do mangrove root systems help stabilize deltas?



a. The roots trap and hold sediments.
b. Animals often live in the root systems.
c. The roots can use both salt and freshwater.
d. The roots allow tidal mixing.
e. The roots extend over the water surface.






Answer: A

What does the term plankton describe?

What does the term plankton describe?




a. A phylum
b. A lifestyle
c. A genus
d. An evolutionary relationship
e. A type of locomotion





Answer: B

What is the relationship of organisms in a trophic pyramid?

What is the relationship of organisms in a trophic pyramid?




a. Primary producers take energy from all other levels.
b. Each level consumes the level underneath for energy.
c. Top consumers eat all other organisms in the pyramid.
d. Primary producers eat all other organisms in the pyramid.
e. The mass of consumers becomes larger higher up the pyramid.




Answer: B

How does chemosynthesis differ from photosynthesis?

How does chemosynthesis differ from photosynthesis?



a. Chemosynthesis is accomplished by top consumers.
b. Chemosynthesis releases stored energy.
c. No sunlight is required for chemosynthesis.
d. Photosynthesis relies on chemical energy.
e. Photosynthesis only occurs on land.






Answer: C

What occurs in a mass extinction?

What occurs in a mass extinction?



a. More species evolve than die.
b. Accelerated evolution occurs.
c. Earth's climate changes slowly.
d. Accelerated mutation occurs.
e. Many species die off simultaneously.






Answer: E

What is the advantage of using scientific names?

What is the advantage of using scientific names?



a. There is only one name per species.
b. There are many names per species.
c. They provide information about location of habitats.
d. They provide unique information on tolerance to different conditions.
e. They are easy to pronounce.





Answer: A

Why does deep water tend to contain more carbon dioxide than surface water?

Why does deep water tend to contain more carbon dioxide than surface water?





a. High pressure dissolves more gases.
b. Deep water contains more organisms.
c. Deep water tends to be warmer.
d. Carbonates are dissolved in deep water.
e. Cold, deep water contains more gas at saturation





Answer: E
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