Q. 125.0( 1 Vote )

(a) How do autotrophs prepare their food?

(b) In the following food chain, 500J of energy is available to plant. How much energy will be available at I consumer and II consumer levels?

Plant Sheep Man

Answer :

(a) Autotrophs prepare their food (carbohydrate) in presence of sunlight with the help of carbon dioxide and water. This process is called photosynthesis.

(b) According to 10% law, 10 % to 500J that is 50J is transferred to sheep (I consumer). Hence, 5J of energy is transferred to lion (II consumer) that is 10 % of 50 J.

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