Write any two external factors which influence the development of a plant.

Explanation

**Step-by-Step Solution:**

1. **Identify External Factors**: Start by understanding what external factors are. External factors are environmental conditions that can influence the growth and development of plants.

2. **Factor 1 - Light**: The first external factor that influences plant development is light. Plants require light for photosynthesis, which is the process they use to convert light energy into chemical energy. Inadequate light can lead to stunted growth and stress in plants.

3. **Factor 2 - Temperature**: The second external factor is temperature. Each plant species has an optimum temperature range for growth. If the temperature is too low or too high, it can adversely affect the plant's development, leading to poor growth or even death.

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