Question

ASSERTION: In a terrestrial ecosystem, detritus food chain is a major conduit for energy flow.
REASON: Solar energy is a direct source of energy supply in the detritus food chain.
A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.
C. Assertion is correct but Reason is incorrect.
D. Both Assertion and Reason are incorrect.

Answer 1

Hint: Food chain is defined as a sequence of organisms that are dependent on each other to obtain food And involves the transfer of energy from the producer through a series of organisms with repeated eating and being eaten is called the food chain.

Complete Answer:
 Each level that is present in the food chain is known as trophic level. There are two types of food chains mainly In the environment, first one is the grazing food chain that is also known as predator food chain and second one is the detritus food chain that is also known as saprophytic food chain.

Now first let us Describe what is detritus food chain.
- Detritus food chain: Detritus food chain starts with the dead organic matter or detritus. It is made up of decomposers, which are heterotrophic organisms. That is they depend on others to obtain their food The heat trophic Organism can be bacteria or fungi.
- The food energy that is present in the dead decaying organism passed to the heterotrophic organism. In the aquatic system, the grazing Food Chain Act is the main transport of energy.
- But in the terrestrial ecosystem, a much larger fraction of energy flows through the detritus food chain than to the grazing food chain.
- So, the assertion given in the quotient is exactly correct.

Now let us discuss the reason given in the question.
- The solar energy that occurs in the forest does not directly act as the energy source. Indent trees, food chain. The Energy Source Act as the dead decaying matter that is decomposed by the organisms such as bacteria and fungi. The enzymes that release from them occur as the energy source.
- So, the assertion given in the question is true, but the reason given in the question is exactly false.

Our required option is C that is assertion is correct, but reason is false.

Note: Detritus food chain may remain connected to the grazing food chain at some levels. Some of the organisms of the detritus food chain act as the predator to grazing food chain animals. In the ecosystem linear food chains are shown to sometimes only exist and not always. An animal may have preference for a particular prey But if the latter has the small population, it can feed upon another prey also. Energy does not remain trapped permanent in any Organism. It may be transferred to the higher trophic level or become available to the decomposers after the Organism dies.