Symbiotic Interactions of Plants and Animals
Biology · 50 practice questions
Energy flow in the ecosystem — food chains, food webs and trophic levels; nutrient cycling in nature — carbon, water and nitrogen cycles.
- Determine examples of symbiosis, parasitism, saprophytism, commensalism, mutualism, amensalism, competition, predation and cooperation among organisms.
- Explain the distribution of organisms using food chains and webs.
- Describe the carbon cycle and its significance (oxygen/carbon(IV) oxide balance, global warming).
- Assess the effects of the water cycle on other nutrient cycles.
- Relate the roles of bacteria and leguminous plants in nitrogen cycling.
Try a few questions
- Practice question 1
An ectoparasite, such as a tick, specifically lives
- A.a factor entirely unrelated to living on the exterior of a host
- B.on the exterior surface of its host
- C.entirely inside the body of its host, identical to an endoparasite
- D.in complete isolation, without any host organism involved at all
Show the answer
B. on the exterior surface of its host
An ectoparasite, such as a tick, specifically lives on the exterior surface of its host.
- Practice question 2
Zooxanthellae, algae found living within coral tissue, specifically represent an example of mutualism in which the algae
- A.provide no actual benefit of any kind to the coral they inhabit
- B.consume the coral tissue directly, benefiting only the algae themselves
- C.a factor entirely unrelated to providing food through photosynthesis
- D.provide the coral with food through photosynthesis, while gaining shelter
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D. provide the coral with food through photosynthesis, while gaining shelter
Zooxanthellae, algae found within coral tissue, specifically represent mutualism, with the algae providing food via photosynthesis for shelter.
- Practice question 3
A food chain specifically represents the sequential transfer of energy from one
- A.ecosystem entirely to another, completely unrelated ecosystem
- B.trophic level to the next within an ecosystem
- C.identical trophic level repeatedly, with no actual transfer to a different level
- D.a factor entirely unrelated to the transfer of energy between trophic levels
Show the answer
B. trophic level to the next within an ecosystem
A food chain specifically represents the sequential transfer of energy from one trophic level to the next within an ecosystem.
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