The driving force or primary source of energy for the grazing food chain is

Plants

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Sun

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Dead organic matter

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Both (a) and (c)

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Solution

The correct option is B
Sun

A grazing food chain is a food chain in which the energy in the lowest trophic level is derived from photosynthesis i.e from the energy of the sun. In grazing food chains the first energy transfer is from plants to herbivores and this is in contrast to detritus food chains where the first energy transfer is from decaying material to detritivores.

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Similar questions

Q. Read the following statements (1 - 3) related food chain and select the correct statement/s ?

1. Food chains have multiple paths interconnecting plants and animals.
2. Grazing food chain begins with the degradation of organic matter.
3. In aquatic ecosystems, the grazing food chain accounts for major conduits of the energy flow.

Q. Assertion (A): The driving force or primary source of energy for most of the ecosystems on Earth is the same.

Reason (R): Except for the deep sea hydrothermal ecosystem, the sun is the only source of energy.

Q. Read statement.
(a) The consumers that feed on the herbivores are carnivores or more correctly primary carnivores.
(b) The detritus food chain (DFC) begin with dead organic matter.
(c) Based on the source of nutrition or food, organisms occupy a specific place in the food chain that is known as their trophic level.

How many of the above statement(s) is/are wrong?

Q. A detritus food chain accounts for more energy flow than the grazing food chain,since most organisms die without being eaten

Q49. With reference to the food chain, consider the following statements
1. A food chain represents only one part of the food or energy flow.
2. Grazing food chain and Detritus food chain both are linked.
3. A food chain always starts from a living plant.
Which of the above statement(s) is/are correct?

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