3121: The Ninth Schedule to the Indian Constitution was added by
(a) First Amendment
(b) Eighth Amendment
(c) Ninth Amendment
(d) Forty second Amendment
3122: Identical twins are born when:
(a) Two sperms fertilise one ovum
(b) Two sperms fertilise two ovums simultaneously
(c) One sperm fertilises the ovum and zygote divides into two separate cells developing independently
(d) One sperm fertilises two ovums
3123: What would happen if phytoplankton of an ocean is completely destroyed for some reason?
1. The ocean as a carbon sink would be adversely affected.
2. The food chains in the ocean would be adversely affected.
3. The density of ocean water would drastically decrease.
Select the correct answer using the codes given below :
(a) 1 and 2 only
(b) 2 only
(c) 3 only
(d) 1, 2 and 3
3124: Which one of the following pairs is not correctly matched?
Unit of Indian Railway :Location
(a) Railway Staff College : Vadodra
(b) Central Organization for Railway Electrification :Varanasi
(c) Wheel and Axle Plant : Bangalore
(d) Rail-coach Factory :Kapurthala
3125: Which one of the following is the correct sequence of a food chain?
(a) Diatoms-Crustaceans-Herrings.
(b) Crustaceans-Diatoms-Herrings.
(c) Diatoms-Herrings-Crustaceans.
(d) Crustaceans-Herrings-Diatoms.