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A : Secondary mycelium of Agaricus is bi...

A : Secondary mycelium of Agaricus is binucleated.
R : Secondary mycelium is formed by somatogamy of primary mycelium.
(a) If both assertion & reason are true and the reason is the correct explanation of the assertion
(b) If both assertion & reason are true but the reason is not the correct explanation of the assertion
(c) If assertion is true statement but reason is false
(d) If both assertion and reason are false statements

A

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

B

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

C

If assertion is true statement but reason is false

D

If both assertion and reason are false statements

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding the assertion and reason about the secondary mycelium of Agaricus, we will analyze each statement step by step. ### Step 1: Analyze the Assertion - **Assertion**: "Secondary mycelium of Agaricus is binucleated." - **Explanation**: In fungi, particularly in the genus Agaricus (which includes common mushrooms), the secondary mycelium is indeed binucleated. This means that each cell in this mycelium contains two nuclei. This characteristic is a defining feature of the secondary mycelium in many fungi, including Agaricus. ### Step 2: Analyze the Reason - **Reason**: "Secondary mycelium is formed by somatogamy of primary mycelium." - **Explanation**: Somatogamy refers to the fusion of two somatic cells (in this case, the primary mycelium) to form a new structure. In the life cycle of fungi, the primary mycelium undergoes plasmogamy (fusion of cytoplasm) leading to the formation of the secondary mycelium, which is binucleated. This process is indeed correct and explains how the secondary mycelium is formed. ### Step 3: Determine the Relationship Between Assertion and Reason - Both the assertion and reason are true statements. - The reason provided correctly explains why the assertion is true. The formation of the secondary mycelium through somatogamy (or plasmogamy) results in the binucleated nature of the secondary mycelium. ### Conclusion Given that both the assertion and reason are true, and the reason correctly explains the assertion, the correct answer is: **(a) If both assertion & reason are true and the reason is the correct explanation of the assertion.** ---
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