Which of the following shows guttation ?

Options

A. Pisum sativum
B. Ficus bengalensis
C. Acacia nilotica
D. Tropaeolum

Answer

To determine which of the following plants shows guttation, we will analyze each option provided:

1. **Pisum sativum**: Commonly known as the garden pea, it is not typically known for guttation. It primarily loses water through transpiration.

2. **Ficus benghalensis**: Also known as the banyan tree, this plant does not exhibit guttation as a prominent feature. It mainly relies on transpiration.

3. **Acacia velutina**: This species of Acacia is not known for guttation either. Like the others, it primarily loses water through transpiration.

4. **Tropaeolum**: This plant, commonly known as nasturtium, is well-known for exhibiting guttation. Guttation occurs when excess water is expelled from the leaf margins, particularly during high humidity or when soil moisture is abundant.

Based on the analysis of each option, the correct answer is **option D: Tropaeolum**.

### Step-by-Step Solution:
1. **Identify the plants listed in the options**.
2. **Research each plant to determine if it is known for guttation**.
3. **Analyze the characteristics of guttation**: Understand that guttation is the process where plants exude water droplets from their leaves, typically at night or in high humidity conditions.
4. **Conclude that Tropaeolum is the only plant among the options that is known for this process**.