Question

In flowering plants, 'triple fusion' is the combination of_____.

• A. Central polar nuclei+ One male gamate
• B. Two antipodal cells + One male gamate
• C. Two synergids + One male gamate
• D. Egg cell + Two male gamates

Answer 1

The Correct Option is A

The correct answer is option (A): Central polar nuclei+ One male gamate
In plants, double fertilization takes place. During this, one male gametes fuse with the egg cell which is known as syngamy. Zygote is produced through this process. In this, both male and female gametes are haploid thus, the zygote formed is diploid. 
The other male gamete fuses with the two polar nuclei (central cell), that form a primary endosperm nucleus. In this, the endosperm produced is triploid as the polar nucleic is diploid and one male gamete is haploid. This process is called triple fusion, as there is a fusion of three haploid nuclei. Both these two processes, syngamy, and triple fusion take place in the embryo sac, the whole process is known as double fertilization. 
Thus the answer is Central polar nuclei+ One male gamete