Question

wind. water
Given below are sets of five terms each. Rewrite
the terms in correct order in a logical sequence
beginning with the term that is underlined :
(i) Intine, Pollen tube, Exine, Tube nucleus, Male
gametes.
(ii) Integuments, Funiculus, Egg, Nucellus, Embryo
sac.
(iii) Stigma, Pollen tube, Pollen grains, Female
gamete, Male gamete.
from the options given​

Answer 1

Answer:

The steps of sexual reproduction in plants are:-

1) Pollination-  the pollen grains are carried by wind, water or insects and animals to reach the stigma of the flower.

This process of transfer of pollen grains is called pollination.

2) Germination-  the pollen tubes begins to grow towards the egg cell. 

These tubes are a pathway for the sperms or male gamete to reach the egg within the ovule.

3) Penetration of the Ovule- The pollen tubes reach the ovule where it penetrates the ovule to reach the female gamete or egg.

4) Fertilization- the male gamete travel down the pollen tubes and fertilize an egg. 

In angiosperms, double fertilization takes place where both egg and the polar nuclei in the embryo sac are fertilized by the male gametes.

5) Post-fertilization- The flower withers and the ovary begins to grow to form a fruit. 

The ovule develops into seeds inside the fruits.

So, the correct answer is 'Q→S→T→P→R'.