Attractants and reward are required for

Options

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

Answer

To solve the question "Attractants and reward are required for," we need to analyze the options provided: anemophily, entomophily, hydrophily, and clistogamy. Let's break down the options step by step.

### Step 1: Understand the Terms
- **Attractants**: These are features of flowers that attract pollinators, such as bright colors and fragrances.
- **Rewards**: These are benefits provided to pollinators, like nectar and pollen grains.

### Step 2: Analyze Each Option
1. **Anemophily**: This refers to wind pollination. In this case, flowers do not need to attract pollinators, as wind carries the pollen. Therefore, they do not require attractants or rewards.

2. **Entomophily**: This refers to insect pollination. Flowers that rely on insects for pollination typically have bright colors and pleasant fragrances to attract these pollinators. They also provide rewards such as nectar and pollen. Thus, entomophily requires both attractants and rewards.

3. **Hydrophily**: This refers to water pollination. Similar to anemophily, flowers that are pollinated by water do not need to attract pollinators, as the water carries the pollen. Therefore, they do not require attractants or rewards.

4. **Clistogamy**: This is a form of self-pollination that occurs in flowers that do not open. Since these flowers do not need to attract any pollinators, they also do not require attractants or rewards.

### Step 3: Conclusion
Based on the analysis, the only option that requires both attractants and rewards is **entomophily** (pollination by insects).

### Final Answer
The correct answer is **entomophily**.

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