Which of the following sequence is correct with respect to the structure present in Gymnosperm?

Options

A. Strobili `rarr` Sporophylls `rarr` Sporangia `rarr` spores
B. Strobili `rarr` Sporangia `rarr` Sporophylls `rarr` spores
C. Sporophylls `rarr` Strobili `rarr` Sporangia `rarr` Spores
D. Spores `rarr` Sporangia `rarr` Strobili `rarr` Cones

Answer

To determine the correct sequence with respect to the structures present in Gymnosperms, we need to analyze the components involved in their reproductive structures. Here’s a step-by-step breakdown of the correct sequence:

### Step-by-Step Solution:

1. **Understanding Gymnosperms**: Gymnosperms are seed-producing plants that have seeds unprotected by an ovary or fruit. They reproduce via cones.

2. **Identifying Structures**: The main structures involved in Gymnosperm reproduction include:
- **Strobili (Cones)**: The reproductive structure where spores are produced.
- **Sporophylls**: Leaf-like structures that bear the sporangia.
- **Sporangia**: Structures that produce spores (microsporangia for male spores and megasporangia for female spores).
- **Spores**: The actual reproductive units (microspores and megaspores).

3. **Correct Sequence**: Based on the understanding of the structures:
- The sequence starts with **Strobili** (the cones).
- Next are the **Sporophylls** (the leaf-like structures that hold the sporangia).
- Then we have the **Sporangia** (where the spores are formed).
- Finally, we have the **Spores** (the end products of the sporangia).

4. **Final Answer**: Therefore, the correct sequence is:
- **Strobili → Sporophylls → Sporangia → Spores**

### Conclusion:
The correct answer is the first option provided in the question.

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