In angiosperms,microsporogenesis and megasporogenesis

Options

A. occur in ovule
B. occur in anther
C. form gametes without further divisions
D. Involve meiosis

Answer

### Step-by-Step Solution:

1. **Definition of Angiosperms**:
Angiosperms are flowering plants that produce seeds. They are characterized by the presence of flowers and the development of seeds within a fruit.

2. **Understanding Microsporogenesis**:
- Microsporogenesis refers to the process of formation of microspores, which develop into pollen grains.
- This process occurs in the male reproductive part of the plant, specifically in the anthers of the stamen.

3. **Understanding Megasporogenesis**:
- Megasporogenesis is the process of formation of megaspores, which develop into ovules.
- This process occurs in the female reproductive part of the plant, specifically in the ovules found within the ovary.

4. **Process of Microsporogenesis**:
- Microsporogenesis involves meiosis, where a microspore mother cell (2n) undergoes two rounds of division to produce four haploid microspores (n).
- These microspores eventually develop into pollen grains.

5. **Process of Megasporogenesis**:
- Megasporogenesis also involves meiosis, where a megaspore mother cell (2n) undergoes division to produce four haploid megaspores (n).
- Typically, only one of these megaspores survives and develops into the female gametophyte (embryo sac).

6. **Conclusion**:
- Both microsporogenesis and megasporogenesis involve meiosis, leading to the formation of haploid gametes (pollen grains and ovules, respectively).
- Therefore, the correct statement regarding microsporogenesis and megasporogenesis in angiosperms is that both processes involve meiosis.