A plant is growing in soil Which becomes nitrogen deficient due to some reason the deficiency symptoms due to nitrogen will b seen

Options

A. First in young leaves
B. First in older leaves
C. Together in young and older leaves
D. First in developing tissues

Answer

To solve the question about the symptoms of nitrogen deficiency in a plant, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Nitrogen's Role**:
- Nitrogen is an essential nutrient for plants, playing a crucial role in the synthesis of amino acids, proteins, and chlorophyll.

2. **Identifying Symptoms of Nitrogen Deficiency**:
- When a plant experiences nitrogen deficiency, it exhibits several characteristic symptoms:
- **Stunted Growth**: The overall growth of the plant slows down, leading to smaller size.
- **Pale Leaves**: The leaves may turn from a healthy green to a pale green or yellowish-green due to reduced chlorophyll production.
- **Inhibited Leaf Growth**: Younger leaves may not develop properly, and their growth is particularly affected.
- **Early Senescence of Older Leaves**: The older leaves may start to yellow and die off prematurely.
- **Increased Root Growth**: The plant may develop a larger root system in an attempt to absorb more nutrients, leading to a lower shoot-to-root ratio.

3. **Observation of Symptoms**:
- The symptoms of nitrogen deficiency are typically first observed in the older leaves of the plant. This is because nitrogen is mobile within the plant, and when there is a deficiency, the plant reallocates nitrogen from older leaves to support the growth of younger leaves.

4. **Conclusion**:
- Based on the symptoms and their progression, we conclude that nitrogen deficiency symptoms will first be seen in the older leaves of the plant.

### Final Answer:
The deficiency symptoms due to nitrogen will be seen first in the older leaves of the plant.

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