Q61 of 163 Page 228

Which of the following statement is incorrect?

green plants get their food from readymade organic compounds.

Green plants or producers do not get their food from readymade organic compounds. Instead they use inorganic compound water and carbon dioxide to synthesize food in the presence of chlorophyll and sunlight.

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59

Organism of a higher trophic level which feed on several types of organisms belonging to a number of lower trophic levels constitute the:

 60

In the following groups of materials, which group/groups contain only non-biodegradable materials ?

(i) wood, paper, leather


(ii) polythene, detergent, PVC


(iii) plastic, detergent, grass


(iv) plastic, Bakelite, DDT

 62

Which of the following group of organisms are not constituents of a food chain?

(i) Grass, lion, rabbit, wolf


(ii) Plankton, man, fish, grasshopper


(iii) Wolf, grass, snake, tiger


(iv) Frog, snake, eagle, grass, grasshopper

 63

In the figure given alongside, the various trophic levels are shown in the form of a pyramid. At which trophic level the maximum energy is available?