Sessile unisexual and neuter flowers are arranged acropetally in the inflorescence of

Options

A. Achyranthes
B. Tridax
C. Colocasia
D. Cassia

Answer

To solve the question regarding the arrangement of sessile unisexual and neuter flowers in an inflorescence, we can follow these steps:

### Step-by-Step Solution

1. **Understand the Question**: The question asks which plant has sessile unisexual and neuter flowers arranged acropetally in its inflorescence.

2. **Analyze the Options**:
- **Option 1: Acryanthus**: The flowers are described as hermaphrodite (bisexual) and are arranged in a sociate manner. This option does not fit the criteria of unisexual flowers.
- **Option 2: Tridex**: This plant has terminal or auxiliary flowers that are bisexual. Therefore, it does not meet the requirement of unisexual flowers.
- **Option 3: Colocasia**: This plant has unisexual flowers, and they are arranged acropetally. This option fits the criteria of the question.
- **Option 4: Kesia**: The flowers in Kesia are described as bisexual, which means this option does not meet the requirement.

3. **Conclusion**: After analyzing all the options, the only plant that has sessile unisexual and neuter flowers arranged acropetally is **Colocasia**.

### Final Answer
The correct answer is **Option 3: Colocasia**.

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