Question

Pollen tube releases sperms in ...

• A. Egg cell
• B. Antipodals
• C. Centre cell
• D. Synergids

Answer 1

The correct option is D Synergids

Synergid cells are two specialized cells that lie adjacent to the egg cell in the female gametophyte of angiosperms and play an essential role in pollen tube guidance and function. The term synergid comes from the Greek word ' Synergos' which means 'working together' and was reportedly coined by Eduard Strasburger. The pollen tube grows towards and into one of the synergid cells, which begins to degenerate as the pollen tube enters it. The pollen tube then ceases growth, ruptures and releases its two sperm cells which migrate to the egg and central cell, fertilization of which gives rise to the embryo and endosperm, respectively. The synergid cells are necessary for pollen tube guidance in the ovule.