Pick out wrong statement

Options

A. double fertilization is unique to angiosperms
B. sequoia a gymnosperm is one of the tallest tree
C. exine has apertures where sporopollenin is present
D. exine of pollen grains is made up of sproropollenin

Answer

To solve the question "Pick out the wrong statement," we will analyze each statement provided in the question one by one.

### Step-by-Step Solution:

1. **Statement 1: Double fertilization is unique to angiosperms.**
- This statement is **true**. Double fertilization is a process that occurs only in angiosperms (flowering plants) and is a defining characteristic of this group.

2. **Statement 2: Sequoia is a gymnosperm and is one of the tallest trees.**
- This statement is also **true**. Sequoia, which belongs to the gymnosperm group, is indeed one of the tallest trees in the world.

3. **Statement 3: Exine has apparatus where sporopollenin is present.**
- This statement is **false**. The exine is the outer layer of the pollen grain and is composed of sporopollenin. It does not contain an "apparatus"; rather, sporopollenin is the substance that makes up the exine.

4. **Statement 4: Exine of pollen grains is made up of sporopollenin.**
- This statement is **true**. The exine of pollen grains is indeed made up of sporopollenin, which is a robust and resistant biopolymer.

### Conclusion:
The only wrong statement among the options is: **"Exine has apparatus where sporopollenin is present."**