Question

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): The labellum of flowers in Zingiberaceae and Orchidaceae are analogous. Reason (R): The labellum in Zingiberaceae is formed by the fusion of petaloid stamens of inner staminal whorl and labellum in Orchidaceae is formed from inner tepal. In the light of the above statements, choose the most appropriate answer from the options given below:

• A. Both (A) and (R) are correct and (R) is the correct explanation of (A)
• B. Both (A) and (R) are correct but (R) is not the correct explanation of (A)
• C. (A) is correct but (R) is not correct
• D. (A) is not correct but (R) is correct

Hint:

Analogous structures serve similar functions but have different origins. Here, both statements correctly describe this phenomenon.

Answer 1

The Correct Option is A

Step 1: Concept
Analogous Structures in Flowering Plants

Step 2: Meaning
Two structures that are analogous share a similar function but have different evolutionary origins.

Step 3: Analysis
Statement (A) claims that the labellum of flowers in Zingiberaceae and Orchidaceae are analogous. This means they perform similar functions despite not being homologous. Statement (R) provides specific details about how the labellum is formed in each family: by petaloid stamens in Zingiberaceae and inner tepals in Orchidaceae. These descriptions support the idea that the structures serve a similar function but are not derived from the same ancestral structure.

Step 4: Conclusion
Both statements (A) and (R) are correct, with statement (R) explaining how the analogous labella form in different families. Final Answer: (A)