How many chromosomes are present in each of the following with respect to Maize plant respectively (a) Leaf epidermal cell (b) Antipodal cell (c) Endosperm cell (d) Generative cell (e) Egg cell (f) Megaspore (g) Microspore mother cell

Options

A. 10, 20, 10, 10, 10, 20, 30
B. 20, 10, 30, 10, 10, 10, 20
C. 20, 10, 10, 10, 20, 30, 10
D. 30, 10, 20, 10, 20, 10, 10.

Answer

To determine the number of chromosomes present in various cells of the maize plant, we will analyze each cell type step by step.

### Step-by-Step Solution:

1. **Leaf Epidermal Cell**:
- The leaf epidermal cells of maize are somatic cells. In maize, the diploid number of chromosomes is 20. Therefore, the leaf epidermal cell, being diploid, contains:
- **Answer**: 10 chromosomes (haploid).

2. **Antipodal Cell**:
- Antipodal cells are found in the embryo sac and are part of the female gametophyte. They are also haploid. In maize, the number of chromosomes in the antipodal cell is:
- **Answer**: 20 chromosomes (haploid).

3. **Endosperm Cell**:
- The endosperm is formed through a process called triple fusion, which involves the fusion of one sperm cell with two polar nuclei. The endosperm is triploid in maize, which means it has:
- **Answer**: 10 chromosomes (haploid).

4. **Generative Cell**:
- The generative cell is part of the pollen grain and is responsible for producing sperm cells. It is also haploid, therefore:
- **Answer**: 10 chromosomes (haploid).

5. **Egg Cell**:
- The egg cell is the female gamete in maize and is haploid, thus it contains:
- **Answer**: 10 chromosomes (haploid).

6. **Megaspore**:
- The megaspore develops into the female gametophyte and is typically haploid. In maize, the megaspore contains:
- **Answer**: 20 chromosomes (haploid).

7. **Microspore Mother Cell**:
- The microspore mother cell undergoes meiosis to produce microspores, and it is diploid. Therefore, it contains:
- **Answer**: 30 chromosomes (diploid).

### Summary of Chromosome Counts:
- Leaf Epidermal Cell: **10 chromosomes**
- Antipodal Cell: **20 chromosomes**
- Endosperm Cell: **10 chromosomes**
- Generative Cell: **10 chromosomes**
- Egg Cell: **10 chromosomes**
- Megaspore: **20 chromosomes**
- Microspore Mother Cell: **30 chromosomes**

### Final Answers:
- (a) Leaf epidermal cell: **10**
- (b) Antipodal cell: **20**
- (c) Endosperm cell: **10**
- (d) Generative cell: **10**
- (e) Egg cell: **10**
- (f) Megaspore: **20**
- (g) Microspore mother cell: **30**