Question

Which of the following statements is incorrect?

• A. Only carbohydrates are utilised by plants to release energy
• B. All cells of a plant do not participate in photosynthesis
• C. Animals obtain food (energy) from autotrophs
• D. Plant cells consisting of chlorophyll in chloroplasts can perform photosynthesis

Answer 1

The correct option is A Only carbohydrates are utilised by plants to release energy

Major source of energy is carbohydrates in plants. However, plants utilise fats, proteins, and organic acids too for their energy requirements under definite conditions.

Photosynthesis is a process of formation of food with the help of sunlight and chlorophyll from carbon dioxide. In other words, photosynthesis helps in trapping light energy to be converted to chemical energy. This chemical energy is stored in the form of bonds in carbohydrates like glucose, starch, etc.

The green plants that have chlorophyll pigments in chloroplasts can carry out photosynthesis. All cells of the plant do not contain chlorophyll in chloroplasts such as root cells, bark cells, etc. Only green parts of the plant which have chlorophyll generally like leaves tend to perform photosynthesis.

Animals obtain food (energy) from autotrophs either directly (herbivorous animals) or indirectly (carnivorous animals).