What is the function of filiform apparatus in an angiosperm embryo sac?A. Brings about opening of the pollen tubeB. Guides the pollen tube into a synergidC. Prevents entry of more than one pollen tube into synergidD. None of these

correct answer is B. Guides the pollen tube into a synergid.

The filiform apparatus is a structure present in the embryo sac of angiosperms, specifically in the synergid cells. The embryo sac is the female gametophyte within the ovule of a flowering plant. The synergid cells are located near the egg cell and play a role in guiding the pollen tube to the embryo sac during fertilization.

The filiform apparatus consists of specialized plasma membrane invaginations and cytoplasmic components within the synergid cells. Its function is to attract and guide the pollen tube towards the synergid cells. Once the pollen tube reaches the vicinity of the filiform apparatus, it is directed toward one of the synergid cells, which is the site of fertilization.

So, option B is the correct answer: The function of the filiform apparatus in an angiosperm embryo sac is to guide the pollen tube into a synergid.





The correct option is B. Guides the pollen tube into a synergid.

The filiform apparatus is a specialized structure found in the embryo sac of angiosperms, specifically within the synergid cells. The synergid cells are located adjacent to the egg cell in the embryo sac, and they play a crucial role in the process of fertilization.

The function of the filiform apparatus is to guide the pollen tube towards the synergid cells. After the pollen grain lands on the stigma and germinates, it sends out a pollen tube, which is responsible for delivering the sperm cells to the embryo sac. The filiform apparatus helps in directing and guiding the pollen tube towards one of the synergid cells.

Once the pollen tube reaches the synergid cell guided by the filiform apparatus, fertilization occurs. The sperm cells are released from the pollen tube and one of them fuses with the egg cell, leading to the formation of a zygote, which eventually develops into an embryo.

Therefore, the correct function of the filiform apparatus in an angiosperm embryo sac is to guide the pollen tube into a synergid.