Commonly in a mature fertilised ovule n, 2n and 3 condition is respectively found in :

Options

A. Antipodals , synergids and integuments
B. Antipodals , zygote and PEN
C. Egg , nucellus and endosperm
D. Endosperm , nucellus and egg

Answer

To solve the question regarding the conditions of n, 2n, and 3n found in a mature fertilized ovule, we can break it down into the following steps:

### Step 1: Understand the Gamete Formation
- In flowering plants, the male gamete (pollen) and female gamete (egg) are produced through meiosis, which results in haploid cells (n). The male gamete is contained within the pollen grain, while the female gamete is found in the ovule.

**Hint:** Remember that gametes are haploid (n) and are crucial for fertilization.

### Step 2: Identify the Zygote Formation
- When the male gamete fuses with the female gamete (egg), a diploid zygote is formed. This zygote has the 2n condition because it contains genetic material from both parents.

**Hint:** Zygote formation is a key event in fertilization, leading to the development of the embryo.

### Step 3: Recognize the N Condition in Other Cells
- In the mature fertilized ovule, there are other cells that also have the haploid condition (n). These include:
- Antipodal cells: Located at the opposite end of the ovule.
- Synergids: Located near the egg cell, assisting in fertilization.
- The polar nuclei: These are two nuclei present in the central cell of the ovule.

**Hint:** Look for cells that are not involved in fertilization but are part of the ovule structure.

### Step 4: Identify the 3n Condition
- The 3n condition arises when one male gamete fuses with the two polar nuclei (each n) in a process known as triple fusion. This fusion creates the primary endosperm nucleus (PEN), which is triploid (3n) and provides nourishment to the developing embryo.

**Hint:** Triple fusion is a unique event in angiosperms that leads to the formation of endosperm.

### Step 5: Summarize the Findings
- In summary, the conditions found in a mature fertilized ovule are:
- n condition: Found in the antipodal cells, synergids, and polar nuclei.
- 2n condition: Found in the zygote.
- 3n condition: Found in the primary endosperm nucleus (PEN).

### Final Answer
Thus, the correct answer to the question is:
- n condition: Antipodal cells
- 2n condition: Zygote
- 3n condition: Primary endosperm nucleus (PEN)

The correct option is the second option.