416: Metastasis is the process by which
(a) cells divide rapidly under the influence of drugs
(b) cancer cells spread through the blood or lymphatic system to other sites or organs
(c) the chromosomes in cell nuclei are attached to the spindle before moving to the anaphase poles
(d) cancer cells are successfully inhibited to divide any further
417: The mind of the makers of the Constitution of India is reflected in which of the following?
(a) The Preamble
(b) The Fundamental Rights
(c) The Directive Principles of State Policy
(d) The Fundamental Duties
418: Assertion (A) :
The frequency of floods in North Indian plains has increased during the last couple of decades.
Reason (R) :
There has been reduction in the depth of river valleys due to deposition of silt.
(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
419: In ancient Indian Buddhist monasteries, a ceremony called Pavarana used to be held. It was the
(a) occasion to elect the Sanghaparinayaka and two speakers one on Dhamma and the other on Vinaya
(b) confession by monks of their offences committed during their stay in the monasteries during the rainy season
(c) ceremony of initiation of new person into the Buddhist Sangha in which the head is shaved an when yellow robes are offered
(d) gathering of Buddhist monks on the next day to the full moon day of Ashadha when they take up affixed abode for the next four months or rainy season
420: With reference to the recent developments in science, which one of the following statements is not correct?
(a) Functional chromosomes can be created by joining segments of DNA taken from cells of different species.
(b) Pieces of artificial functional DNA can be created in laboratories.
(c) A piece of DNA taken out from an animal cell can be made to replicate outside a living cell in a laboratory.
(d) Cells taken out from plasma and animals can be made to undergo cell division in laboratory petri dishes.