Antheridia and archegonia are absent in :-

Options

A. Bryophyta
B. Pteridophyta
C. Gymnosperms
D. Angiosperms

Answer

**Step-by-Step Solution:**

1. **Understanding Antheridia and Archegonia:**
- Antheridia are the male reproductive organs that produce sperm.
- Archegonia are the female reproductive organs that produce eggs.

2. **Identifying the Groups of Plants:**
- We need to analyze the four options provided: Bryophyta, Pteridophyta, Gymnosperms, and Angiosperms.
- Bryophyta includes mosses and liverworts, which possess both antheridia and archegonia.
- Pteridophyta includes ferns, which also have both reproductive structures.
- Gymnosperms, such as conifers, have male and female cones but do not have antheridia and archegonia in the traditional sense.
- Angiosperms are flowering plants that have evolved to have flowers, which serve as the reproductive structures.

3. **Conclusion:**
- Antheridia and archegonia are absent in Angiosperms (flowering plants) because their reproductive functions are carried out by flowers, where the stamen produces pollen (male gametes) and the carpel produces ovules (female gametes).

**Final Answer:**
Antheridia and archegonia are absent in Angiosperms.

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