Q. 195.0( 1 Vote )

What is the function of the two male gametes produced by each pollen grain in angiosperms.

Answer :

The two male gametes produced by each pollen grain in angiosperms helps in double fertilisation.

i. One of the male gametes moves towards the egg cell and fuses with its nucleus called Syngamy. This results in the formation of a diploid cell, the zygote.


ii. The other male gamete moves towards the two polar nuclei located in the central cell and fuses with them to produce a triploid primary endosperm nucleus (PEN) (Figure 2.13a).


As this involves the fusion of three haploid nuclei it is termed triple fusion.


Two types of fusions, syngamy and triple fusion, take place in an embryo sac the phenomenon is termed double fertilisation, an event unique to flowering plants.


Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Exemplar Special Quiz | Sexual Reproduction in flowering Plants Part 1Exemplar Special Quiz | Sexual Reproduction in flowering Plants Part 1Exemplar Special Quiz | Sexual Reproduction in flowering Plants Part 133 mins
Lets understand the ploidy levels of various structures of a flowering plantLets understand the ploidy levels of various structures of a flowering plantLets understand the ploidy levels of various structures of a flowering plant53 mins
Reminding 11th - Revise complete anatomy of flowering plants with a quizReminding 11th - Revise complete anatomy of flowering plants with a quizReminding 11th - Revise complete anatomy of flowering plants with a quiz42 mins
Revise Development of Embryo sac with Rapid QuizRevise Development of Embryo sac with Rapid QuizRevise Development of Embryo sac with Rapid Quiz61 mins
Biotic Agents for PollinationBiotic Agents for PollinationBiotic Agents for Pollination42 mins
Exemplar Special Quiz | Sexual Reproduction in flowering Plants Part 1Exemplar Special Quiz | Sexual Reproduction in flowering Plants Part 1Exemplar Special Quiz | Sexual Reproduction in flowering Plants Part 132 mins
Understant the concept of Development of pollen grainsUnderstant the concept of Development of pollen grainsUnderstant the concept of Development of pollen grains55 mins
Revise Sexual reproduction in flowering plants with a quizRevise Sexual reproduction in flowering plants with a quizRevise Sexual reproduction in flowering plants with a quiz44 mins
MicrosporegenesisMicrosporegenesisMicrosporegenesis48 mins
Types of pollinationTypes of pollinationTypes of pollination61 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses