Question

Given below are two statements about vernalization.
Statement I - Generally vernalization is effective at seed stage in annual plants.
Statement II - The site of vernalization is believed to be shoot apical meristem.
In the light of above statements, select the correct option given below:

• A. Both statement I and statement II are correct
• B. Both statement I and statement II are incorrect
• C. Statement I is correct but statement II is incorrect
• D. Statement I is incorrect but statement II is correct

Hint:

Annuals respond to cold as seeds and the cold stimulus is perceived at the shoot apical meristem.

Answer 1

The Correct Option is A

Step 1: Understanding the Concept
Vernalization is the promotion of flowering by a period of low-temperature treatment.

Step 2: Statement I
It is true. In annuals such as winter wheat, rye and barley, the cold treatment is effective on germinating seeds, while biennials respond later at the seedling or rosette stage.

Step 3: Statement II
It is true. The cold stimulus is perceived by actively dividing cells, mainly the shoot apical meristem (embryo tip in a seed).

Final Answer:
Both statements are correct, option (A). \[ \boxed{\text{(A) }\text{Both statement I and statement II are correct}} \]