2721: Consider the following kinds of organisms :
1. Bat
2. Bee
3. Bird
Which of the above is/are pollinating agent/agents?
(a) 1 and 2 only
(b) 2 only
(c) 1 and 3 only
(d) 1, 2 and 3
2722: The demand for the Tebhaga Peasant Movement in Bengal was for
(a) the reduction of the share of the landlords from one-half of the crop to one-third
(b) the grant of ownership of land to peasants as they were the actual cultivators of the land
(c) the uprooting of Zamindari system and the end of serfdom
(d) writing off all peasant debts
2723: A thief running at 8 km/hr is chased by a policeman whose speed is 10 km/hr. If the thief is 100 metres ahead of the policeman, then the time required for the policeman to catch the thief will be
(a) 2 minutes
(b) 6 minutes
(c) 10 minutes
(d) 3 minutes
2724: If 15 pumps of equal capacity can fill a tank in 7 days, then how many extra pumps will be required to fill the tank in 5 days?
(a) 6
(b) 7
(c) 14
(d) 21
2725: The sex of the offspring is determined, when:
(a) The conception takes place
(b) The sperm fertilises the ovum
(c) The embryo is partially developed
(d) The end of gestation period is near