Life Processes

  • Question 29
    CBSEENSC10011729

    What are nutrients?

    Solution
    Nutrients are substances which an organism obtains from its surroundings and uses it either as an energy source or source of material required for growth and maintenance of the body.
    Question 30
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    Define photosynthesis process.

    Solution
    Photosynthesis is the process by which autotrophs take in substances from the outside and convert them into stored forms of energy. The substances taken in are carbon dioxide and water which are converted into carbohydrates in presence of sunlight and chlorophyll. Carbohydrates are used for providing energy to the plants.
    Question 31
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    Which nutrient are generally utilised for providing energy to the plant and also to us?

    Solution
    Carbohydrates.
    Question 32
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    Name two things mainly required to maintain living organisms provided by food.

    Solution

    (i) Energy and (ii) Nutrients. 

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