Filaments suddenly straighten to throw the pollen grains into air in

Options

A. Pea
B. Urtica
C. Centauria
D. Mirabilis

Answer

To solve the question "Filaments suddenly straighten to throw the pollen grains into air in?", we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Mechanism**: The question describes a mechanism where filaments straighten suddenly to release pollen grains into the air. This is known as the "Gun Powder Mechanism."

2. **Identify the Process**: This mechanism involves the release of pollen grains (the male gametes) from the anthers of flowers. The sudden straightening of the filaments helps in the dispersal of pollen grains into the air.

3. **Connect to Pollination**: The process described is a form of wind pollination, where pollen grains are transferred to the stigma of the female part of the flower.

4. **Recall Specific Plants**: The Gun Powder Mechanism is specifically associated with certain plants. One notable example is the nettle plant.

5. **Choose the Correct Option**: From the options provided (P, Eutychia, Syntoria, Mirabilis), the scientific name associated with the Gun Powder Mechanism is **Eutychia**.

6. **Final Answer**: Therefore, the correct answer to the question is **option 2, Eutychia**.