Question

Green plants in a forest ecosystem are

• A. Suppliers of food and $O_2$
• B. Consumers of nutritive materials
• C. Consumers of animal proteins
• D. Suppliers of timber

Answer 1

The correct option is A Suppliers of food and $O_2$

All living creatures depend on plants to survive. Through photosynthesis, plants convert energy from sunlight into food stored as carbohydrates. Because animals cannot get energy directly from the sun, they must eat plants to survive. Plants also provide the oxygen humans and animals breathe, because plants use carbon dioxide for photosynthesis and release oxygen into the atmosphere.