Question

Select the mismatch :

• A. Pinus – Dioecious
• B. Cycas – Dioecious
• C. Salvinia – Homosporous
• D. Equisetum – Homosporous

Answer 1

The Correct Option is A

To determine the mismatch among the provided options, we need to understand the terms related to plant reproductive biology used here:

1. Pinus – Dioecious: This statement suggests that Pinus species have separate male and female plants. However, this is incorrect. Pinus is typically monoecious, meaning both male and female reproductive structures are found on the same plant but in separate cones.
2. Cycas – Dioecious: This is correct. Cycas plants are dioecious, having distinct male and female individuals.
3. Salvinia – Homosporous: This is incorrect. Salvinia is heterosporous, producing two types of spores—microspores and megaspores.
4. Equisetum – Homosporous: This is correct. Equisetum, or horsetail, is homosporous, producing only one type of spore that can develop into a bisexual gametophyte.

The key mismatch here is related to Pinus being incorrectly labeled as "Dioecious."

Thus, the correct mismatch is Pinus – Dioecious.