Which of the following is the 'master gland'?
Ichthyology is study of-
Which of the following was the earliest plantation crop is introduced in India?
The element present in the largest amount in rocks and minerals is–
Which is the largest flightless bird?
Which prefix is often used with scientific terms to indicate that something is the same, equal or constant?
In an atomic explosion, enormous energy is released which is due to
Diamond is an allotropic form of: