JAMB 2017 Biology · Question 15
The feeding relationship among a set of members of a community is referred to as _______?
Options
- A.a food web
- B.pyramid of energy
- C.a food chain
- D.pyramid of number
Answer: A. a food web
Explanation written with AI and checked against the answer key
Analyze the question: The question asks for the term describing the feeding relationships among a set of members of a community. The key idea is that it covers many members and their overall feeding interconnections, not just one linear path.
Explain the concepts:
- Food chain: A single, linear sequence showing who eats whom (e.g., grass → grasshopper → lizard → hawk). It shows only one pathway.
- Food web: Several interlinked food chains in a community. It shows the complex feeding relationships among many organisms, because most organisms feed on more than one thing and are eaten by more than one predator.
- Pyramid of energy: Shows the amount of energy available at each trophic level. It is not a feeding relationship as such.
- Pyramid of number: Shows the number of organisms at each trophic level.
Solution:
- The question refers to a set of members of a community, which means many organisms, not just one line of feeding.
- Feeding relationships among many organisms form interconnected chains, which is a food web.
- Options B and D describe quantities (energy or numbers) at each trophic level, not the feeding relationships themselves.
- Option C (food chain) is too limited, since it describes only one linear path.
Answer: A. a food web.
Exam tip: Remember "chain = single line, web = many connected lines." If the question mentions a community or several organisms and their interconnected feeding, think food web. If it mentions numbers or energy at levels, think pyramid.
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