Spiny or sticky pollen grains and large, attractively coloured flowers are associated with

Options

A. hydrophily
B. entomophily
C. ornithophily
D. anemophily

Explanation

To answer the question "Spiny or sticky pollen grains and large, attractively coloured flowers are associated with?", we will analyze the options provided: hydrophilic, entomophilic, ornithophilic, and anemophilic.

### Step-by-Step Solution:

1. **Understanding Pollination Types**:
- **Hydrophilic**: This refers to water pollination. Flowers that are hydrophilic usually have small sizes, are unwettable, and lack strong colors or scents. This option does not match the characteristics described in the question.

- **Entomophilic**: This refers to insect pollination. Flowers that are entomophilic typically have sticky or spiny pollen grains to adhere to insects. They also feature large, brightly colored flowers to attract pollinators. This matches the characteristics given in the question.

- **Ornithophilic**: This refers to bird pollination. Flowers that are ornithophilic are generally large and brightly colored, but they are not spiny or sticky, as spiny structures would make them inedible for birds. Therefore, this option does not fit the description.

- **Anemophilic**: This refers to wind pollination. Anemophilous flowers are usually small, produce a large quantity of non-sticky, colorless pollen, and lack nectar. This option also does not match the characteristics described in the question.

2. **Conclusion**:
Based on the analysis, the correct answer is **Entomophilic** (Option B). This type of pollination is characterized by spiny or sticky pollen grains and large, attractively colored flowers.