Student to attempt either option-(A) or (B):
(A) Study the given diagram showing the sectional view of a seminiferous tubule.
Answer the following questions:
OR
(B) Study the figures given below showing initial stages in the formation of female gametophyte and answer the questions that follow.
The current passing through the battery in the given circuit, is: 
A constant voltage of 50 V is maintained between the points A and B of the circuit shown in the figure. The current through the branch CD of the circuit is :
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