Double fertilization was first discovered by Nawaschin (1898) in

Options

A. lilium and allium
B. lilium and fritillaria
C. zea mays and mangifera
D. nigella and fritillaria

Answer

**Step-by-Step Text Solution:**

1. **Understanding Double Fertilization**: Double fertilization is a unique process that occurs in flowering plants (angiosperms). In this process, two male gametes are involved.

2. **Process of Double Fertilization**:
- One male gamete fuses with the egg cell to form the zygote, which eventually develops into the embryo.
- The second male gamete fuses with two polar nuclei (also referred to as the secondary nucleus) to form the endosperm, which provides nourishment to the developing embryo.

3. **Historical Context**: The discovery of double fertilization was made by the scientist Nawaschin in the year 1898.

4. **Identifying the Plants**: The first observations of double fertilization were made in two specific plants:
- Lilium martagon (commonly known as the martagon lily)
- Fritillaria tinella (a species of fritillary)

5. **Evaluating the Options**:
- The question provides multiple options regarding the plants in which double fertilization was discovered.
- The correct pair is Lilium and Fritillaria.

6. **Conclusion**: Therefore, the correct answer to the question is that double fertilization was first discovered by Nawaschin in 1898 in Lilium and Fritillaria.

**Final Answer**: Lilium and Fritillaria.

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