Enriched Science Chapter 7 Part 4 Question Preview (ID: 38341)


Part 4.

How do detritivores get their energy?
a) Detritivores get their energy by eating the remains of other organisms.
b) Detritivores get their energy by eating the a variety of things,
c) Detritivores get their energy by eating plants.
d) Detritivores get their energy from the sun.

How does the movement of water in ecosystems differ from the movement of energy?
a) Water cycles through ecosystems in a continuous cycle. Energy flows in one direction.
b) Water cycles through ecosystems in randomly. Energy flows in one direction.
c) Water cycles through ecosystems in randomly. Energy flows in two directions.
d) Water cycles through ecosystems in a continuous cycle. Energy flows in two directions.

What are the three common systems used for modeling ecosystems?
a) Food chains, food webs, and energy pyramids are commonly used as models for ecosystems
b) Food chains, food maps, and energy pyramids are commonly used as models for ecosystems
c) Food chains, food maps, and energy triangles are commonly used as models for ecosystems
d) Food levels, food webs, and energy pyramids are commonly used as models for ecosystems

If the first trophic level in an energy pyramid receives 1,000 units of energy from the Sun, how much energy is available for the third trophic level?
a) 900 units
b) 800 units
c) 10 units
d) 1 unit

Which of the following does NOT move continuously through ecosystems?
a) water
b) aluminum
c) oxygen
d) nitrogen

How are nutrients returned to the soil?
a) Bacteria break down dead plants and animals and return the nutrients to the soil.
b) Bacteria break down dead plants and animals and return the nutrients to the atmosphere.
c) Carnivores break down dead plants and animals and return the nutrients to the soil.
d) Carnivores break down dead plants and animals and return the nutrients to the atmosphere.

Which of the following is a living thing?
a) water
b) honey
c) bee
d) air

Which of the following abiotic things affects climate and temperature?
a) wind
b) the Sun
c) the Moon
d) rain

Which of the following eats animals?
a) carnivore
b) herbivore
c) bacteria
d) fungi

What is one reason that a food web might be a better description of an ecosystem than a food chain?
a) Animals have only one option of what to eat.
b) Organisms have a choice of what to eat.
c) At least one animal in the web has webbed feet.
d) No animals are chained.

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