Ovule is technically equivalent to

Options

A. (a) megasporangium with one megaspore
B. (b) integumated indehiscent megasporangium
C. (c) megagametangium
D. (d) integumented female gameteophyte

Answer

**Step-by-Step Solution:**

1. **Understanding the Ovule**: The ovule is a crucial structure in flowering plants, specifically in angiosperms and gymnosperms. It is responsible for producing female gametes (eggs).

2. **Definition of Ovule**: The ovule is technically referred to as the megasporangium. This is because it is the structure that produces megaspores, which eventually develop into female gametophytes or gametes.

3. **Structure of Ovule**: In angiosperms, the ovule is surrounded by integuments, which provide protection. The ovule contains a megasporocyte that undergoes meiosis to produce four megaspores, out of which three typically degenerate, leaving one functional megaspore.

4. **Identifying the Correct Answer**: The question asks for what the ovule is technically equivalent to. The options provided include:
- A) Megasporangium with 1 megaspore
- B) Indehiscent megasporangium
- C) Mega gamatangia
- D) Integumented female gametophyte

5. **Evaluating the Options**:
- **Option A** is incorrect because while the ovule is a megasporangium, it typically contains four megaspores, not just one.
- **Option B** is correct because "indehiscent" means that the ovule does not release its contents, which aligns with the behavior of the ovule in flowering plants.
- **Option C** is incorrect as "mega gamatangia" is not a recognized term in plant biology.
- **Option D** is incorrect because while the ovule is integumented, the female gametophyte itself is not.

6. **Conclusion**: The correct answer to the question "Ovule is technically equivalent to" is **B) Indehiscent megasporangium**.

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