Animal vectors are required for pollination in

Options

A. maize
B. vallisneria
C. mubery
D. cucumber

Answer

To solve the question "Animal vectors are required for pollination in," we will analyze each option provided and determine which plant relies on animal vectors for pollination.

### Step-by-Step Solution:

1. **Understand the Question**: The question asks which of the given options requires animal vectors for pollination. Animal vectors typically include insects, birds, and other animals that assist in the transfer of pollen.

2. **Evaluate Each Option**:
- **Option A: Maize**:
- Maize (Zea mays) is primarily pollinated by wind (anemophily). Therefore, it does not require animal vectors for pollination.
- **Conclusion**: Incorrect option.

- **Option B: Valisneria**:
- Valisneria is a type of aquatic plant that relies on water for pollination (hydrophily). It does not use animal vectors.
- **Conclusion**: Incorrect option.

- **Option C: Mulberry**:
- Mulberry (Morus) also relies on wind for pollination (anemophily), similar to maize. Thus, it does not require animal vectors.
- **Conclusion**: Incorrect option.

- **Option D: Cucumber**:
- Cucumber (Cucumis sativus) is primarily pollinated by insects, particularly bees. This type of pollination is known as entomophily, which involves animal vectors.
- **Conclusion**: Correct option.

3. **Final Answer**: Based on the analysis, the correct answer is **Cucumber** (Option D), as it requires animal vectors (insects) for pollination.