Which of the following is a post fertilisation events in flowering plants?

a) Transfer of pollen grains.

b) Embryo development.

c) Fruit development.

d) Formation of pollen grains.

e) Formation of seeds

b,c, e.

The correct answer is Option (3) -b,c, e.

Events in sexual reproduction after the formation of zygote are called post-fertilisation events .

Post-fertilization events in flowering plants are processes that occur after the fusion of the sperm and egg cells (fertilization) has taken place. These events include:

• Embryo development (b): After fertilization, the zygote formed begins to divide and develop into an embryo.
• Formation of seeds (c) : Ovules develop into seeds after fertilization. Each ovule contains an egg cell which, when fertilized by a sperm cell, forms a seed.
• Fruit development (e): The ovary of the flower develops into a fruit that contains the seeds.

The other options listed are pre-fertilization or unrelated to fertilization:

Pre-fertilisation Events :These include all the events of sexual reproduction prior to the fusion of gametes. The two main pre-fertilisation events are gametogenesis and gamete transfer.

• Transfer of pollen grains (a): This is a pre-fertilization event, where pollen is transferred from the anther to the stigma.
• Formation of pollen grains (d): This is another pre-fertilization event involving the production of male gametophytes.

Thus, the correct set of post-fertilization events is b,c, e.