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Select the incorrect expression with res...

Select the incorrect expression with respect to vernalisation
I) Winter variety of barley if planted in spring fail to flower in a flowering season II) Biennials like sugar beet, cabbage, carrot are monocarpic plants III) Speeding up ability to flower by low temperature treatment IV) Winter variety of wheat is harvested during winter season

A

I, II and III

B

IV alone

C

II and IV

D

III alone

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding the incorrect expression with respect to vernalization, we will analyze each of the four statements provided: 1. **Statement I**: "Winter variety of barley if planted in spring fail to flower in a flowering season." - **Analysis**: This statement is correct. Winter varieties of barley require a period of cold (vernalization) to flower. If planted in spring, they do not receive the necessary cold treatment and thus fail to flower in that season. 2. **Statement II**: "Biennials like sugar beet, cabbage, carrot are monocarpic plants." - **Analysis**: This statement is also correct. Biennials complete their life cycle in two years and typically flower and produce seeds only once, which qualifies them as monocarpic plants. 3. **Statement III**: "Speeding up ability to flower by low temperature treatment." - **Analysis**: This statement is correct as well. Vernalization is the process by which exposure to low temperatures induces flowering in certain plants, effectively speeding up their ability to flower. 4. **Statement IV**: "Winter variety of wheat is harvested during winter season." - **Analysis**: This statement is incorrect. Winter varieties of wheat are not harvested during the winter; they are typically harvested in the summer or autumn after the growing season. **Conclusion**: The incorrect expression with respect to vernalization is **Statement IV**. ### Step-by-Step Solution: 1. Analyze Statement I: Confirm it is correct regarding the flowering of winter barley. 2. Analyze Statement II: Confirm it is correct regarding biennials being monocarpic. 3. Analyze Statement III: Confirm it is correct regarding vernalization and flowering. 4. Analyze Statement IV: Identify it as incorrect since winter wheat is harvested in autumn, not winter.
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