NEETBotanySexual Reproduction in Flowering Plants
What role does the filiform apparatus play in the pollen-pistil interaction?
Options
- AIt produces the pollen tube
- BIt guides the entry of the pollen tube into the ovule
- CIt absorbs the pollen nutrients
- DIt initiates pollen grain germination
Correct answer
B. It guides the entry of the pollen tube into the ovule
Step-by-step solution
Pollen tube grows through the tissues of the stigma and style and reaches the ovary You would recall that in some plants, pollen grains are shed at two-celled condition (a vegetative cell and a generative cell.In plants which shed pollen in the three-celled condition, pollen tubes carry the two male gametes from the beginning. Pollen tube, after reaching the ovary, enters the ovule through the micropyle and then enters one of the synergids through the filiform apparatus .Many recent studies have shown that filiform