Intrinsic factors that affect development in plants are

Options

A. light, water and oxygen.
B. oxygen, genetic and plant growth regulators.
C. genetic and plant growth regulators.
D. water, temperature and plant growth regulators.

Answer

To answer the question regarding the intrinsic factors that affect development in plants, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Intrinsic Factors**:
- Intrinsic factors are internal factors that influence the development of plants. These include genetic makeup and hormonal influences.

2. **Identifying the Options**:
- We have four options to evaluate:
- Option 1: Light, water, and oxygen
- Option 2: Oxygen, genetic, and plant growth regulators
- Option 3: Genetic and plant growth regulators
- Option 4: Water, temperature, and plant growth regulators

3. **Analyzing Each Option**:
- **Option 1**: Light, water, and oxygen are external factors that affect plant growth, not intrinsic.
- **Option 2**: While it includes genetic factors, oxygen is an external factor.
- **Option 3**: This option includes genetic factors and plant growth regulators, both of which are intrinsic factors.
- **Option 4**: Water and temperature are external factors, while plant growth regulators are intrinsic.

4. **Conclusion**:
- The only option that consists solely of intrinsic factors is **Option 3: Genetic and plant growth regulators**.

### Final Answer:
The intrinsic factors that affect development in plants are **genetic factors and plant growth regulators**.

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