Female gametophyte in conifers and cycads is `:`

Options

A. Haploid embryo sac
B. Diploid nucellus
C. Haploid endosperm
D. Triploid endosperm

Answer

To solve the question regarding the female gametophyte in conifers and cycads, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Group**: Recognize that conifers and cycads belong to the group known as gymnosperms. Gymnosperms are characterized by having naked seeds, meaning their ovules are not enclosed by an ovary wall.

2. **Understand Female Gametophyte**: In gymnosperms, the female gametophyte develops within the ovule. This structure is crucial for reproduction as it contains the egg cell.

3. **Determine the Ploidy Level**: The female gametophyte in gymnosperms is haploid. This means it has a single set of chromosomes.

4. **Identify the Endosperm**: After fertilization, the zygote develops into an embryo, and the persistent female gametophyte becomes the endosperm. In gymnosperms, the endosperm is haploid, unlike in angiosperms, where it is triploid.

5. **Select the Correct Answer**: Given the options provided in the question, the correct answer is that the female gametophyte in conifers and cycads is a haploid endosperm.

### Final Answer:
The female gametophyte in conifers and cycads is a **haploid endosperm**.

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