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Which of these are false statements abo...

Which of these are false statements about calcium ?
I. It is required during the formation of the cell wall.
II. It accumulates in younger leaves.
III. Spindle fibers can't be formed with it.
IV. It is absolutely necessary for the synthesis of auxins.

A

I and III

B

II and IV

C

II, III and IV

D

I, II and IV

Text Solution

AI Generated Solution

The correct Answer is:
To determine which statements about calcium are false, let's analyze each statement one by one: 1. **Statement I: It is required during the formation of the cell wall.** - Calcium is indeed required during the formation of the cell wall as it is a component of calcium pectinate, which is found in the middle lamella of plant cells. Therefore, this statement is **true**. 2. **Statement II: It accumulates in younger leaves.** - This statement is **false**. Calcium is an immobile element in plants, meaning it does not move from older leaves to younger leaves. Instead, it tends to accumulate in older leaves. Hence, this statement is incorrect. 3. **Statement III: Spindle fibers can't be formed with it.** - This statement is also **false**. Calcium plays a crucial role in the formation of spindle fibers during cell division. It is necessary for the proper functioning of the mitotic spindle. Therefore, this statement is incorrect. 4. **Statement IV: It is absolutely necessary for the synthesis of auxins.** - This statement is **false**. While calcium is important for various plant functions, the synthesis of auxins primarily requires zinc as a mineral element. Therefore, this statement is incorrect. Now, summarizing the analysis: - **False Statements:** II, III, and IV - **True Statement:** I Thus, the false statements about calcium are II, III, and IV.
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