Select the mismatch

Options

A. Pinus-Dioecious
B. Cycas-Dioecious
C. Salvinia -Heterosporous
D. Equisetum-Homosporous

Answer

To solve the question of selecting the mismatch, we will analyze each option provided in the question step by step.

### Step 1: Understand the Terms
- **Dioecious**: Plants that have either male or female reproductive organs, meaning one plant will have only one type of reproductive organ.
- **Monoecious**: Plants that have both male and female reproductive organs on the same plant.

### Step 2: Analyze Option A - Pinus
- **Pinus**: This is a type of gymnosperm.
- The statement claims that Pinus is dioecious. However, Pinus is actually monoecious, as it has both male and female reproductive parts on the same plant.
- **Conclusion**: This option is a mismatch.

### Step 3: Analyze Option B - Cyclus
- **Cyclus**: Another gymnosperm.
- The statement claims that Cyclus is dioecious. This is correct because Cyclus has either male or female reproductive parts, but not both on the same plant.
- **Conclusion**: This option is correct.

### Step 4: Analyze Option C - Salvinia
- **Salvinia**: A type of pteridophyte.
- The statement claims that Salvinia is heterosporous. This is correct as Salvinia produces two different types of spores (male and female).
- **Conclusion**: This option is correct.

### Step 5: Analyze Option D - Equisetum
- **Equisetum**: Another type of pteridophyte.
- The statement claims that Equisetum is homosporous. This is also correct as Equisetum produces only one type of spore.
- **Conclusion**: This option is correct.

### Final Conclusion
After analyzing all the options, the mismatch is found in **Option A** where Pinus is incorrectly described as dioecious instead of monoecious.

### Answer: Option A is the mismatch.

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