The Process of Bursting of Anterior End of Pollen Tube in Embryosac

The process of bursting of the anterior end of the pollen tube in the embryosac is an important event in plant fertilization. The correct answer to the question is option D, i.e., endosmosis.

Explanation

The bursting of the anterior end of the pollen tube involves the process of endosmosis. Endosmosis is the movement of water from outside the cell to the inside of the cell due to the difference in the concentration of solutes. In the case of the pollen tube, the concentration of solutes inside the tube is higher than the concentration of solutes in the surrounding cells of the embryosac. Thus, water moves inside the pollen tube due to endosmosis. This results in the bursting of the anterior end of the pollen tube.

The bursting of the pollen tube is necessary for the release of sperm cells, which then fertilize the egg cell in the embryosac. The bursting of the pollen tube is also facilitated by enzymatic action, which weakens the cell wall of the tube. However, the primary cause of the bursting of the anterior end of the pollen tube is endosmosis.

Conclusion

In conclusion, the bursting of the anterior end of the pollen tube in the embryosac involves the process of endosmosis, which is the movement of water from outside the cell to the inside of the cell due to the difference in the concentration of solutes. This process is facilitated by enzymatic action, which weakens the cell wall of the tube.

Correct option is A bcz pollen tube contains two male gamates and one tube cell here endosmosis means moment of cytoplasm with gamtes and cell from higher conc. to lower Conc.i,e.from matured pollen grain to Ovule