Embryo sac is also called

Options

A. microspore
B. megaspore
C. megagametophytre
D. microgametophyte

Answer

To answer the question "Embryo sac is also called," we can follow these steps:

### Step 1: Understand the Definition
The embryo sac is a structure found in flowering plants (angiosperms) that contains the female gametes. It is crucial for reproduction in these plants.

**Hint:** Recall that the embryo sac is involved in the process of fertilization in flowering plants.

### Step 2: Identify the Components of the Embryo Sac
The embryo sac typically contains:
- Three antipodal cells at the top.
- Two polar nuclei in the center.
- One egg cell (ovum) at the bottom.
- Two synergid cells on either side of the egg cell.

**Hint:** Remember the arrangement of cells within the embryo sac and their roles in fertilization.

### Step 3: Determine the Number of Cells and Nuclei
The embryo sac is described as a 7-celled and 8-nucleate structure:
- It has a total of 7 cells (3 antipodal cells + 1 egg cell + 2 synergids + 2 polar nuclei).
- It has 8 nuclei (the two polar nuclei count as one nucleus).

**Hint:** Think about how the number of cells and nuclei relates to the function of the embryo sac.

### Step 4: Identify the Correct Terminology
The embryo sac is specifically referred to as the "megagametophyte" in angiosperms. This term distinguishes it from other types of gametophytes.

**Hint:** Focus on the terminology used in plant biology to describe reproductive structures.

### Step 5: Choose the Correct Answer
Based on the information provided, the correct answer to the question is that the embryo sac is also called the "megagametophyte."

**Hint:** Review the options given in the question to confirm that "megagametophyte" is the correct term.

### Final Answer
The embryo sac is also called the **megagametophyte**.