Given below is the diagram of human ovum surrounded by a few sperms. Observe the diagram and answer the questions that follows : (i) Compare the fate of sperms P, Q and R shown in the diagram. (ii) Write the role of Zona pellucida in this process. (iii) Analyse the changes occurring in the ovum after the entry of sperm. (iv) How acrosome and middle piece of a human sperm are able to play an important role in human fertilization ?

Question

CASE_STUDIESFertilisation and Embryo Development in HumansCBSE PYQ4 sub-questions

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Given below is the diagram of human ovum surrounded by a few sperms. Observe the diagram and answer the questions that follows :

Student to attempt either option-(A) or (B) :

Fertilisation and Embryo Development in Humans

Development of Male Gametophyte in Flowering Plants

Student to attempt either option (A) or (B).

Penetration of the sperm in the ovum is followed by :