Which one of the following organisms reproduces sexually only once in its life time ?

Options

A. Banana plant
B. Mango
C. Tomato
D. Eucalyptus

Explanation

To determine which organism reproduces sexually only once in its lifetime, we will analyze each option provided:

1. **Banana Plant**:
- The banana plant is known for its unique reproductive strategy. It is a perennial plant that typically flowers and reproduces sexually only once in its lifetime. After flowering and fruiting, the main plant dies, although it can produce offshoots (suckers) that can grow into new plants. This means that the banana plant fits the criteria of reproducing sexually only once.

2. **Mango**:
- The mango tree is also a perennial plant, but it can flower and produce fruit multiple times over several years. Therefore, it does not reproduce sexually only once in its lifetime.

3. **Tomato**:
- The tomato plant is generally considered an annual plant, but it can also be grown as a perennial in some climates. Regardless, it can flower and produce fruit multiple times throughout its growing season, so it does not meet the criteria of reproducing sexually only once.

4. **Eucalyptus**:
- Eucalyptus trees are typically considered annual or perennial plants, depending on the species. However, they also have the capability to flower and produce seeds multiple times throughout their life. Thus, they do not reproduce sexually only once.

Based on the analysis of these options, the organism that reproduces sexually only once in its lifetime is the **Banana Plant**.

**Final Answer**: Option A - Banana Plant

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