Question

Which of the following is the function of the filiform apparatus?

• A. Stimulate the division of the generative cell
• B. Recognize the suitable pollen at the stigma
• C. Guides the entry of pollen tube
• D. Produce nectar

Answer 1

The correct option is C

Guides the entry of pollen tube

The correct option is C.

Explanation of the correct option:

1. The filiform apparatus is the synergid cell wall that forms an enormously thick structure at the micropylar end.
2. It has many finger-like extensions in the synergid cytoplasm structure.
3. It facilitates pollen tube entrance into synergids.
4. Flowers have filiform apparatus inside their ovary.

Explanation of the incorrect option:

Option A:

Mitogens are proteins that accelerate cell division by removing intracellular negative regulators that would otherwise prevent the cell cycle from progressing.

Option B:

1. When a pollen grain lands on the stigma, chemical communication happens between the pollen grain and the pistil.
2. That will be assisting the pistil in recognizing the correct type of pollen.

Option D:

1. Nectar is created by nectaries, which are glands in the plant.
2. Flowers generate nectar in consideration of pollination.

Final answer: The function of the filiform apparatus is to guide the entry of the pollen tube.