Triploid tissue is

Options

A. Endosperm in Maize/Wheat/Lily
B. Leaf in Onion/Bryophyllum/Pinus
C. Root in Onion/Radish/Carrot
D. Ferm prothallus.

Answer

**Step-by-Step Solution:**

1. **Understanding Triploid Tissue**:
- Triploid tissue refers to a tissue that has three sets of chromosomes (3n). In plants, this is commonly found in certain parts of seeds.

2. **Analyzing the Options**:
- **Option 1: Endosperm in maize, wheat, or lily**:
- The endosperm is formed during fertilization when one diploid polar nucleus fuses with a haploid male gamete. This results in a triploid primary endosperm mother cell (3n). Therefore, the endosperm in these plants is triploid.

- **Option 2: Leaf in onion, bryophyllum**:
- Leaves are part of the plant's somatic tissue and are diploid (2n), which means they have two sets of chromosomes. Thus, this option is incorrect.

- **Option 3: Root in onion, radish, or carrot**:
- Roots are also somatic tissues and are diploid (2n). Therefore, this option is incorrect as well.

- **Option 4: Fern prothallus**:
- The prothallus of a fern develops from a spore produced by meiosis, which means it is haploid (n). Hence, this option is also incorrect.

3. **Conclusion**:
- After analyzing all the options, the only correct answer is **Option 1: Endosperm in maize, wheat, or lily**, which is indeed triploid tissue.

**Final Answer**: The correct answer is the endosperm in maize, wheat, or lily.

---