NEET BIOLOGY

Detailed explanation-1: -Filliform apparatus is a mass of finger like projections of the wall into the cytoplasm. It is present in synergids of the embryo sac, in the micropylar region.

Detailed explanation-2: -Final answer: Filiform apparatus is the characteristic feature of synergids.

Detailed explanation-3: -The synergids are also essential for the cessation of pollen tube growth and release of the sperm cells. The synergid cell wall forms a highly thickened structure called the filiform apparatus at the micropylar end, consisting of numerous finger-like projections into the synergid cytoplasm.

Detailed explanation-4: -The function of the filiform apparatus is to guide the pollen tube into the synergids. The pollen tube creates an opening in the embryo sac with the help of certain enzymes and not the filiform apparatus. Filiform apparatus has no role to play in seed formation either.

Detailed explanation-5: -Hint: Filiform apparatus is found inside the ovary of the flower. It is the thickened and prominent structure. These are finger-like projections located near the micropylar end of the embryo sac.