1.

Arrange the sentences given below in order to describe the process of fertilization. W: The pollen tube grows down through the style reaches the ovary. X: The pollen grain germinates on reaching the stigma. Y: The male gamete moves into the ovule to fuse with the ovum. Z: The pollen tube grows out from the pollen.                 Which of these options are in the correct order?

A.  WXYZ                  
B.         XZWY  
C.  YWZX                  
D.         WZXY
Answer» C.  YWZX                  


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