Home
Class 12
BIOLOGY
Assertion : The plant biomass which serv...

Assertion : The plant biomass which serves as the food of herbivores and decomposers is said to result from the gross primary productivity.
Reason : Gross primary productivity is the rate of net production of organic meterial (biomass).

A

If both assertion and reason are true and reason is the correct explanation of assertion

B

If both assertion and reason are true but reason is not the correct explanation of assertion

C

If assertion is true but reason is false

D

If both assertion and reson are false.

Text Solution

AI Generated Solution

The correct Answer is:
To solve the assertion and reason question step by step, we can break it down as follows: ### Step 1: Understand the Assertion The assertion states that "The plant biomass which serves as the food of herbivores and decomposers is said to result from the gross primary productivity." - **Explanation**: Gross Primary Productivity (GPP) refers to the total amount of organic matter (biomass) produced by photosynthesis in plants. This biomass serves as the primary food source for herbivores (animals that eat plants) and decomposers (organisms that break down dead organic matter). ### Step 2: Understand the Reason The reason states that "Gross primary productivity is the rate of net production of organic material (biomass)." - **Explanation**: This statement is slightly misleading. Gross Primary Productivity (GPP) is actually the total rate of production of organic material during photosynthesis, not the net production. The net production is calculated by subtracting the rate of respiration from GPP, which gives us Net Primary Productivity (NPP). ### Step 3: Analyze the Truth of Each Statement - **Assertion**: True. The biomass produced by plants (GPP) does indeed serve as food for herbivores and decomposers. - **Reason**: Partially true but not correctly stated. GPP is the total production, while NPP is the net production after accounting for respiration. ### Step 4: Conclusion Since the assertion is true but the reason is not correctly explaining the assertion, we conclude that: - The assertion is true. - The reason is not a correct explanation of the assertion. ### Final Answer Both statements are not correct in relation to each other. Therefore, the correct option is that the assertion is true, but the reason is false. ---
To solve the assertion and reason question step by step, we can break it down as follows: ### Step 1: Understand the Assertion The assertion states that "The plant biomass which serves as the food of herbivores and decomposers is said to result from the gross primary productivity." - **Explanation**: Gross Primary Productivity (GPP) refers to the total amount of organic matter (biomass) produced by photosynthesis in plants. This biomass serves as the primary food source for herbivores (animals that eat plants) and decomposers (organisms that break down dead organic matter). ### Step 2: Understand the Reason ...
Promotional Banner

Similar Questions

Explore conceptually related problems

Gross primary productivity is the

Gross primary productivity is-

Write a difference between net primary productivity and gross productivity

Gross primary productivity minus respiration losses of an ecosystem is

Describe the interrelationship between productivity , gross primary productivity and net productivity.

Describe the onter - relationship between productivity , gross primary productivity and net productivity.

Describe the inter - relationship between productivity , gross primary productivity and net productivity.

Percentage of NPP in relation to gross primary productivity is called :

The rate of synthesis of organic matter by consumers is (a) net primary productivity (b) gross primary productivity (c) standing state (d) secondary productivity

In relation to Gross primary productivity and Net primary productivity of an ecosystem,which one of the following statements is correct?