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Solution


Q.

Identify A, B and C in the given diagram and match the labelling referred in column I and correlate with the function in column II.

Column I Column II
A. (i) Special reproductive female sex cell which combines with male gamete to form zygote.
B. (ii) A male gamete moves down through it towards the female gamete in the ovary
C. (iii) Receiving the pollen grains from the anther of stamen during pollination.

 
1 A-(iii), B-(ii), C-(i)  
2 A-(ii), B-(i), C-(iii)  
3 A-(i), B-(ii), C-(iii)  
4 A-(iii), B-(i), C-(ii)  

Ans.

(1)

A – Stigma. The top part of carpel is called stigma. Stigma is for receiving the pollen grains from the anther of stamen during pollination.
B – Pollen tube. When a pollen grain falls on the stigma, it bursts open and grows a pollen tube downward through the style towards the female gamete in the ovary. A male gamete moves down the pollen tube.
C – Female gamete (ovum). It is a special reproductive female sex cell which combines with male gamete to form zygote.