NEETBotanyPlant Kingdom
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): In Equisetum, sporophylls form distinct compact structures called strobili or cones. Reason (R): Equisetum is a heterosporous pteridophyte that produces microspores and megaspores within its strobili. In the light of the above statements, choose the most appropriate answer from the options given be
Options
- ABoth (A) and (R) are correct and (R) is the correct explanation of (A).
- BBoth (A) and (R) are correct but (R) is not the correct explanation of (A).
- C(A) is not correct but (R) is correct.
- D(A) is correct but (R) is not correct.
Correct answer
D. (A) is correct but (R) is not correct.
Step-by-step solution
Assertion (A) is correct because in some pteridophytes like Selaginella and Equisetum, the sporophylls form distinct compact structures called strobili or cones. Reason (R) is not correct because Equisetum is a homosporous pteridophyte, meaning it produces only one kind of spore. According to NCERT, among pteridophytes, genera like Selaginella and Salvinia are heterosporous (producing macro and micro spores), whereas the majority, including Equisetum, are homosporous. Answer: (A) is correct but (R) is not correct.