A plant creates food by using source of light is called.
(A) Photosynthesis
(B) Biosynthesis
(C) Phototropism
(D) Decomposition
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → (A) only
Green plants make their own food from carbon dioxide and water, using the energy of sunlight absorbed by chlorophyll, and give out oxygen. This process is photosynthesis (‘photo’ light, ‘synthesis’ putting together).
(A) Photosynthesis Correct. It is the making of food (glucose) with the help of light, as described above.
(B) Biosynthesis Incorrect. It is any building of complex substances from simpler ones in a living cell, such as proteins from amino acids; it does not need light.
(C) Phototropism Incorrect. It is the bending of a plant part towards or away from light, a growth movement, not food making.
(D) Decomposition Incorrect. It is the breaking down of dead plants and animals by bacteria and fungi.