Viagra causes dilation of blood vessels and increased blood flow to the penis, facilitating erection. Viagra acts by inhibiting which of the following events?

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#Question id: 23612

#Aptitude

If M × N means M is the daughter of N ; M + N means M is the father of N ; M %N means M is the mother of N and M −N means M is the brother of N the P %Q + R −T × K indicates which relation of P to K?

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#Question id: 12575

#10. Ecological Principles

All of the following are adaptations that permit the camel to be active by day in the desert EXCEPT 

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#Question id: 17286

#13. Methods in Biology

Consider the following grouped frequency distribution :

 

What is the median of the distribution ? 

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#Question id: 6963

#5. Developmental Biology

During early sea urchin development, which embryonic cells have similar organizer activity to that of amphibian Spemann organizer?

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#Question id: 16100

#7. System Physiology – Animal

Heat-loss mechanism: