536: Population of cells derived from a single parent cell is called
(a) Haploid
(b) Diploid
(c) Symmetrical cell
(d) Clone
537: "Each day is more or less the same, the morning is clear and bright with a sea breeze; as the Sun climbs high in the sky, heat mounts up, dark clouds form, then rain comes with thunder and lightning. But rain is soon over." Which of the following regions is described in the above passage?
(a) Savannah
(b) Equatorial
(c) Monsoon
(d) Mediterranean
538: Assertion (A):
The eastern coast of India produces more rice than the western coast.
Reason (R):
The eastern coast receives more rainfall than the western coast.
(a) Both A and R are individually true and R is the correct explanation of A
(b) Both A and R are individually true but R is NOT the correct explanation of A
(c) A is true but R is false
(d) A is false but R is true
539: There are 6 different letters and 6 correspondingly addressed envelopes. If the letters are randomly put in the envelopes, what is the probability that exactly 5 letters go into the correctly addressed envelopes?
(a) Zero
(b) 1/2
(c) 1/6
(d) 5/6
540: What is the difference between asteroids and comets?
1. Asteroids are small rocky planetoids, while comets are formed of frozen gases held together by rocky and metallic material.
2. Asteroids are found mostly between the orbits of Jupiter and Mars, while comets are found mostly between Venus and Mercury.
3. Comets show a perceptible glowing tail, while asteroids do not.
Which of the statements given above is / are correct?
(a) 1 and 2 only
(b) 1 and 3 only
(c) 3 only
(d) 1, 2 and 3