Question

2. Raw materials required in the autotrophic mode of nutrition involves: i. Carbon dioxide and water ii. Chlorophyll iii. Nitrogen iv. Sunlight           a) (i), (ii) and (iii)           b) (i) and (ii)           c) (i), (ii) and (iv)           d) All (i), (ii), (iii) and (iv)

Answer 1

The raw materials required in the autotrophic mode of nutrition involves sunlight, chlorophyll, carbon dioxide and water.

Reason -

(i) Sunlight - Sunlight provides the energy needed for photosynthesis. Green plants use the energy of light to convert carbon dioxide (CO2) and water (H2O) into carbohydrates.

(ii) Chlorophyll - Chlorophyll is a green pigment found in the chloroplasts of the plant cell. This green pigment plays a vital role in the process of photosynthesis by helping plants to trap energy from sun.

(iii) Carbon Dioxide - Carbon dioxide is important for photosynthesis because it provides the carbon required by the plant to produce carbohydrate.

(iv) Water -  Oxygen released during photosynthesis comes from photolysis of water.

The correct option is (c) i, ii, and iv.

Answer 2

The Raw materials required in the autotrophic mode of nutrition involves is (c) (i), (ii) and (iv)

Explanation:

• In the presence of sunshine, a creature creates its own nourishment from basic inorganic materials such as water, mineral salts, and carbon dioxide.
• It may be found in plants. Photosynthesis is the process by which food is prepared, and it involves carbon dioxide, water, chlorophyll, and sunshine.
• Plants synthesize the nutrients gained from plants by utilizing various components collected from the environment as well as the soil. Nitrogen is also a member of this group of elements.