$$6CO_2 + 6H_2O + \text{light energy} \rightarrow C_6H_{12}O_6$ + 6O_2$$

Question 1

Which of the following best describes the concept of an ecological niche?

Accepted Answer

The sum of a species’ use of biotic and abiotic resources in its environment.

Question 2

Which process is primarily responsible for converting atmospheric nitrogen ($$N_2) $$into a form usable by plants?

Accepted Answer

Nitrogen fixation

Question 3

A bee pollinating a flower is an example of which type of interspecific interaction?

Accepted Answer

Mutualism

Question 4

Which of the following is NOT a component of the H.I.P.P.C.O. acronym for causes of declining biodiversity?

Accepted Answer

Photosynthesis

Question 5

What is the main difference between primary and secondary succession?

Accepted Answer

Primary succession occurs in areas with no soil, while secondary succession occurs where soil is already present.

Question 6

Which of the following best explains biological magnification?

Accepted Answer

The concentration of toxic chemicals increases at higher trophic levels in a food chain.

Question 7

A keystone species is important in a community because:

Accepted Answer

Its impact on the community is large relative to its abundance.

Question 8

Which of the following is a real-world example of overexploitation?

Accepted Answer

The removal of so many fish from a population that it cannot sustain itself.

Question 9

Which of the following equations correctly represents the conversion of solar energy to chemical energy during photosynthesis?

Accepted Answer

$$6CO_2 + 6H_2O + 	ext{light energy} ightarrow C_6H_{12}O_6$ + 6O_2$$

Question 10

Which of the following best describes the role of decomposers in an ecosystem?

Accepted Answer

They break down dead organic matter, recycling nutrients back into the ecosystem.

Question 11

Which of the following is a consequence of nutrient pollution in aquatic ecosystems?

Accepted Answer

Algal blooms that can lead to oxygen depletion and fish kills.

Question 12

Which of the following is an example of commensalism?

Accepted Answer

A barnacle attaching to a whale, gaining mobility while the whale is unaffected.

Question 13

Which of the following is a primary abiotic reservoir for phosphorus in the ecosystem?

Accepted Answer

Rocks and ocean sediments

Question 14

What is the main function of bioremediation in ecosystem restoration?

Accepted Answer

To use living organisms to detoxify polluted ecosystems.

Question 15

Which of the following best describes the competitive exclusion principle?

Accepted Answer

Two species competing for the same resources cannot coexist if their niches are too similar.

Question 16

Which of the following is a real-world example of mutualism?

Accepted Answer

Coral polyps and unicellular algae living together, both benefiting.

Question 17

Which of the following is a direct result of habitat loss?

Accepted Answer

Decreased population sizes and possible extinction.

Question 18

Which of the following best describes the flow of energy in an ecosystem?

Accepted Answer

Energy flows in one direction, from the sun to producers to consumers and finally to decomposers.

Question 19

Which of the following is a key difference between food chains and food webs?

Accepted Answer

Food chains show only one possible path of energy flow, while food webs show multiple interconnected paths.

Question 20

Which of the following is a sustainable development goal relevant to ecosystem conservation?

Accepted Answer

Meeting the needs of people today without limiting the ability of future generations to meet their needs.

Communities and Ecosystems: Structure, Interactions, and Conservation

스터디 가이드 - 연습 문제