Questions

In a majority of flowering plants, out of the four megaspores, what is the ratio of functional and degenerate megaspores?

Which of the following enzymes is responsible for RNA synthesis?

In each testes in a male reproductive system, there are ________ compartments called testicular lobules.

'Parsec' is the unit measurement of

A and B together can do a piece of work in 12 days while A alone can do the same work in 30 days. B alone can do it in

A boat is sailing towards a lighthouse of height 20√3 m at a certain speed. The angle of elevation of the top of the lighthouse changes from 30° to 60° in 10 seconds. What is the time taken (in seconds) by the boat to reach the lighthouse from its initial position?

The first large scale electrical air conditioning was invented and used in 1902 by

In the following question, a sentence has been given in Active/Passive voice. Out of the four alternatives suggested, select the one which best expresses the same sentence in Passive/Active voice. 
Sarla changed the curtains.