Read the following statement and find out INCORRECT statement .
(a) Both a short day plant and a long day plant can flower simultaneously in a given place .
(b) Sugar beet cabbage and carrot are common biennials .
(c) Some important food plants, wheat, barley , and rye have three kinds of varieties : winter, summer, and spring varieties
(d) Many of the intrinsic factors such as temperature and light , control plants growth and development.

Options

A. a and d
B. b and c
C. c and d
D. d and e

Answer

To solve the question, we need to analyze each of the statements provided and determine which one is incorrect.

### Step-by-Step Solution:

1. **Statement (a)**: "Both a short day plant and a long day plant can flower simultaneously in a given place."
- **Analysis**: This statement is correct. Short day plants require longer nights to flower, while long day plants require longer days. However, if both types are given the appropriate photoperiod, they can flower at the same location.

2. **Statement (b)**: "Sugar beet, cabbage, and carrot are common biennials."
- **Analysis**: This statement is also correct. Biennial plants complete their life cycle in two years, and sugar beet, cabbage, and carrot are indeed examples of biennials.

3. **Statement (c)**: "Some important food plants, wheat, barley, and rye have three kinds of varieties: winter, summer, and spring varieties."
- **Analysis**: This statement is incorrect. Wheat, barley, and rye typically have two main varieties: winter and spring varieties. There is no recognized category of "summer varieties" for these crops.

4. **Statement (d)**: "Many of the intrinsic factors such as temperature and light control plant growth and development."
- **Analysis**: This statement is misleading. Temperature and light are considered extrinsic factors, not intrinsic factors. Intrinsic factors would refer to genetic and hormonal influences within the plant itself.

### Conclusion:
The incorrect statement is **(c)**, as it incorrectly states the number of varieties for wheat, barley, and rye.

### Final Answer:
The incorrect statement is **(c)**.

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