596: Which one of the following is the best description of the term 'ecosystem'?
(a) A community of organisms interacting with one another.
(b) That part of the Earth which is inhabited by living organisms.
(c) A community of organisms together with the environment in which they live
(d) The flora and fauna of a geographical area
597: Ice skating can be used to demonstrate that when ice is under pressure, its:
(a) Melting point is lowered
(b) Melting point is raised
(c) Melting point remains unchanged
(d) Coefficient of friction with metal is reduced
598: Which of the following pairs is not correct?
(a) Seismograph : Earthquakes
(b) Anemometer : Speed of the wind
(c) Hygrometer : Water vapour content of the atmosphere
(d) Lactometer : Specific gravity of liquids
599: Which one of the following is an insectivorous plant?
(a) Passion flower plant
(b) Pitcher plant
(c) Night queen
(d) Flame of the forest
600: Who among the following constitute the National Development Council?
1. The Prime Minister
2. The Chairman, Finance Commission
3. Ministers of the Union Cabinet
4. Chief Ministers of the States
Select the correct answer using the codes given below.
(a) 1, 2 and 3 only
(b) 2 and 4 only
(c) 1, 3 and 4 only
(d) 1, 2, 3 and 4