3796: When one gene controls two or more different characters simultaneously, the phenomenon is called
(a) Apomixis
(b) Pleiotropy
(c) Polyploidy
(d) Polyteny
3797: Which one of the following organisms is likely to show the highest- concentration of DDT once it has been introduced into the ecosystem ?
(a) Grasshopper
(b) Toad
(c) Snake
(d) Cattle
3798: Consider the following:
1. Star tortoise
2. Monitor lizard
3. Pygmy hog
4. Spider monkey
Which of the above are naturally found in India?
(a) 1 and 4 only
(b) 2 and 3 only
(c) 1, 2 and 3 only
(d) 1, 2 and 3 and 4
3799: Salts of which of the following elements provide colours to fireworks?
(a) Zinc and sulphur
(b) Potassium and mercury
(c) Strontium and barium
(d) Chromium and nickel
3800: Assertion (A):
The Congress rejected the Cripps proposals.
Reason (R):
The Cripps Mission consisted solely of whites.
(a) Both A and R are true, and R is the correct explanation of A
(b) Both A and R are true, but R is NOT a correct explanation of A
(c) A is true, but R is false
(d) A is false, but R is true