Question

Arrange the following sentence given below in correct sequence describing the process of sexual reproduction in a flowering plant.
P; Fertilisation takes place
Q: Pollen grains are released
R: A fruit with seeds develops
s: The stigma receives pollen grains
T: Pollen tubes grow towards the ovules

• A. $Q\to S\to p\to T\to R\to$
• B. $Q\to S\to T\to P\to R\to$
• C. $R\to Q\to S\to P\to T\to$
• D. $T\to Q\to S\to P\to R\to$

Answer 1

The correct option is B $Q\to S\to T\to P\to R\to$

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'.