List two deficiency symtoms observed in plants.

Explanation

**Step-by-Step Solution:**

1. **Understanding Deficiency Symptoms**: Deficiency symptoms in plants occur when there is a lack of essential nutrients. These nutrients can be classified into macro and micro nutrients, and their absence can lead to various observable changes in the plant's appearance.

2. **Identifying Common Symptoms**: The symptoms of nutrient deficiency often manifest in the leaves, nodes, and internodes of the plant. It is important to note that the specific symptoms can vary depending on which nutrient is deficient.

3. **Listing Deficiency Symptoms**:
- **First Symptom - Yellowing of Leaves**: This is a common symptom where the leaves begin to turn yellow, often starting from the edges and moving inward. This condition is also known as chlorosis and can indicate a deficiency in nitrogen or other nutrients.
...