A leafy twig of mesophytic plant dipped in water would demonstrate

Options

A. Photosynthesis
B. Transpiration
C. Respiration
D. Guttation.

Answer

To solve the question, "A leafy twig of mesophytic plant dipped in water would demonstrate," we can follow these steps:

### Step 1: Understand the terms
- **Mesophytic plants** are those that thrive in environments that are neither too dry nor too wet. They have adaptations to conserve water and can perform normal physiological processes under moderate water availability.

### Step 2: Analyze the processes mentioned
- The question lists four processes: photosynthesis, transpiration, respiration, and guttation.
- **Photosynthesis**: This process occurs when plants convert light energy into chemical energy, primarily in the presence of sunlight.
- **Transpiration**: This is the process of water vapor loss from the aerial parts of the plant, mainly through stomata.
- **Respiration**: This is the process of breaking down glucose to release energy, which occurs continuously.
- **Guttation**: This is the exudation of water droplets from the leaves of some plants, usually occurring at night when soil moisture is high.

### Step 3: Consider the effect of dipping in water
- When a mesophytic plant is dipped in water, it is temporarily in a hydrophytic condition (more water than it typically encounters). This increased water availability will lead to an increase in transpiration rates, as the plant will lose more water vapor through its stomata due to the abundance of water.

### Step 4: Determine the correct answer
- Given the conditions, the most likely process that would be demonstrated by the leafy twig of a mesophytic plant when dipped in water is **transpiration**. The other processes (photosynthesis, respiration, and guttation) may also occur, but the significant increase in water availability will primarily enhance transpiration.

### Conclusion
The correct answer to the question is **transpiration**.

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