If the number of chromosomes present in the egg of a gymnosperms plant is 10 , then the number of chromosomes present in the endosperm of the same plant is

Options

A. 30
B. 20
C. 10
D. 40

Answer

To determine the number of chromosomes present in the endosperm of a gymnosperm plant when the egg cell contains 10 chromosomes, we can follow these steps:

### Step 1: Understand the Chromosome Number in Egg Cells
- In gymnosperms, the egg cell is haploid. This means it contains a single set of chromosomes. If the egg has 10 chromosomes, it is denoted as "n = 10".

### Step 2: Determine the Nature of Endosperm in Gymnosperms
- In gymnosperms, the endosperm is also a haploid tissue. This is different from angiosperms, where the endosperm is typically triploid (3n) due to the process of triple fusion.

### Step 3: Conclude the Chromosome Number in Endosperm
- Since both the egg and the endosperm in gymnosperms are haploid, and the egg has 10 chromosomes, the endosperm will also have the same number of chromosomes.
- Therefore, the number of chromosomes present in the endosperm of the gymnosperm plant is also 10.

### Final Answer
- The number of chromosomes present in the endosperm of the gymnosperm plant is **10**.

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