In entomophily floweres are

Options

A. dull coloured
B. nectaries
C. with sticky pollen grains
D. small sized solitary

Answer

**Step-by-Step Solution:**

1. **Understanding Entomophily**: The term "entomophily" refers to the pollination of flowers by insects. This process is crucial for the reproduction of many flowering plants.

2. **Characteristics of Entomophilic Flowers**:
- **Color**: Entomophilic flowers are typically **colorful** to attract insects. Dull-colored flowers are not effective in attracting pollinators.
- **Fragrance**: These flowers often produce a pleasant fragrance, which serves to lure insects.
- **Nectar**: They have **nectaries** that produce nectar, which is a food source for the pollinators.
- **Pollen Grains**: The pollen grains of entomophilic flowers are usually **sticky**, which helps them adhere to the bodies of insects as they visit the flowers.
- **Flower Size**: Entomophilic flowers tend to be **large** to be more visible and accessible to insects.

3. **Evaluating the Options**:
- **Option 1: Dull color** - Incorrect, as entomophilic flowers are colorful.
- **Option 2: Nectaries with sticky pollen grains** - Correct, as these are essential features of entomophilic flowers.
- **Option 3: Small-sized solitary** - Incorrect, since entomophilic flowers are generally larger and not solitary.
- **Option 4: Sticky pollen grains** - Correct, as sticky pollen helps in effective pollination.

4. **Conclusion**: The correct characteristics of entomophilic flowers are that they have **nectaries with sticky pollen grains**.

**Final Answer**: The correct options are **2 and 3**.

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