In Capsella, embryo sac is

Options

A. Haploid
B. Diploid
C. Triploid
D. Polyploid.

Answer

**Step-by-Step Solution:**

1. **Understand the Structure of the Embryo Sac**: The embryo sac is a crucial part of the reproductive structure in angiosperms (flowering plants). It is located within the ovule and is responsible for the development of the female gametophyte.

2. **Identify the Ploidy Level**: In angiosperms, including Capsella (commonly known as shepherd's purse), the embryo sac is formed from a haploid megaspore. This means that the cells within the embryo sac contain a single set of chromosomes.

3. **Determine the Correct Answer**: Since the embryo sac is derived from a haploid megaspore, it is classified as haploid. Therefore, the correct answer to the question is that the embryo sac in Capsella is haploid.

4. **Conclude the Answer**: Based on the information, the correct choice for the ploidy level of the embryo sac in Capsella is option A: haploid.

**Final Answer**: The embryo sac in Capsella is haploid.

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