2196: In a bisexual flower, if androecium and gynaecium mature at different times, the phenomenon is know as
(a) Dichogamy
(b) Herkogamy
(c) Heterogamy
(d) Monogamy
2197: Consider the following statements about the megacities of India :
I. Population of each megacity is more than 5 million.
II. All the megacities are important sea ports.
III. Megacities are either national or State capitals.
Which of these statements are correct ?
(a) I, II and III
(b) I and II
(c) II and III
(d) I and III
2198: Consider the following statements:
1. The first telegraph line in India was laid between Kolkata (formerly Calcutta) and Diamond Harbour.
2. The first Export processing zone in India was set up in Kandla.
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
2199: Ice skating can be used to demonstrate that when ice is under pressure, its:
(a) Melting point is lowered
(b) Melting point is raised
(c) Melting point remains unchanged
(d) Coefficient of friction with metal is reduced
2200: Raja Rammohan Roy was supporter of:
(a) Sati
(b) Widow re-marriage
(c) Child marriage
(d) Learning of Sanskrit