Effects of Cycles on Ecosystems

Question 1

Plants in the desert _______.a.effectively conserve and retain water b.have high levels of transpirationc.release 50-80% of water back into the ecosystemd.make their own precipitation

Question 2

In the carbon cycle, carbon is found in _______.a.the atmosphereb.the soilc.living organismsd.all of the above

Question 3

Which of the following statements about the phosphorus cycle is true?a.In living organisms, phosphorus can be found in nucleic acids.b.Phosphorus in aquatic ecosystems is only found in sediment.c.Elevated levels of phosphorus in aquatic ecosystems is always beneficial. d.The soil plays no part in the phosphorus cycle.

Revolt · Accepted Answer

A: A

Question 4

Which of the following is not a way in which carbon gases are introduced into the atmosphere? a. forest fires b. respiration c. photosynthesis d. burning of fossil fuels Please select the best answer from the choices provided

Question 5

Which of the following is not a way in which carbon gases are introduced into the atmosphere? a. forest fires b. respiration c. photosynthesis d. burning of fossil fuels Please select the best answer from the choices provided

Revolt · Accepted Answer

C: C

Question 6

What effect do abiotic cycles have on ecosystems?

Revolt · Accepted Answer

Abiotic cycles have a great impact on ecosystems. When the cycles occur more frequently, like the water cycle in the rainforest, the living components of the ecosystem respond accordingly. The organisms in the rainforest are adapted to the conditions of abiotic cycles in that region. The organisms in the desert are also adapted to the conditions of abiotic cycles in their region.

Question 7

How do the plants in a rainforest contribute to the water cycle?

Revolt · Accepted Answer

Plants in a rainforest contribute to the amount of precipitation through the process of transpiration. Transpiration occurs when plants release water in the process of photosynthesis. The large number of plants in the rainforest produces a large amount of water, releasing up to 80% of the water they absorb back into the ecosystem as water vapor. This water vapor can then be returned to the soil for in the form of precipitation. This movement of water from the soil and back into the atmosphere is a key component of the water cycle.

Question 8

Which of the following statements about the phosphorus cycle is true?a.In living organisms, phosphorus can be found in nucleic acids.b.Phosphorus in aquatic ecosystems is only found in sediment.c.Elevated levels of phosphorus in aquatic ecosystems is always beneficial. d.The soil plays no part in the phosphorus cycle.

Question 9

Explain the role of organisms in the carbon cycle.

Revolt · Accepted Answer

Plants take carbon from the atmosphere in the form of carbon dioxide during photosynthesis. Plants and animals both release carbon dioxide back into the atmosphere through the process of respiration. When organisms die, some of the carbon in their bodies is stored in the soil, which can be reintroduced into the atmosphere through soil respiration.

Question 10

In the carbon cycle, carbon is found in _______.a.the atmosphereb.the soilc.living organismsd.all of the above

Revolt · Accepted Answer

D: D

Effects of Cycles on Ecosystems Answers

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