Question

(i)
Most of the mass of organic material of a plant comes from:
(a) Water
(b) Carbon dioxide
(c) Soil minerals (d) Atmospheric oxygen​

Answer 1

Answer:

carbon dioxide is the correct answer

Answer 2

Most of the mass of organic material of a plant comes from carbon dioxide (option b).

• The organic mass of a plant is generally composed of carbon.
• This carbon comes from the carbon dioxide during photosynthesis by plants.
• During photosynthesis, plants convert solar energy to chemical energy.
• This chemical energy is arrested within the bonds of carbon and is stored as glucose.
• Carbon dioxide with the help of water and light energy gets converted into glucose.
• Thus, option b is correct and caron dioxide is the right answer.

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