1) How does food yield energy?
2) Give the general equation for respiration?
3) How does gaseous exchange take place in the lower animals?
4)Which parts of a plant is involved in the gaseous exchange?
5) How does gaseous exchange take place in the leaves?
Answers
1) The process of breaking down food to yield energy is called cellular respiration . How Ecosystems Work Section 1 Burning the Fuel • Cellular respiration is the process by which cells produce energy from carbohydrates ; atmospheric oxygen combines with glucose to form water and carbon dioxide.
2)Cellular respiration is the chemical reaction in which glucose and oxygen are turned into water, carbon dioxide, and energy (ATP). ... C 6 H 12 O 6 + 6 O 2 --> 6 CO 2 + 6 H 2 O + ATP is the complete balanced chemical formula for cellular respiration.
3)In animals, gas exchange follows the same general pattern as in plants. Oxygen and carbon dioxide move by diffusion across moist membranes. In simple animals, the exchange occurs directly with the environment. But with complex animals, such as mammals, the exchange occurs between the environment and the blood.
4)The exchange of oxygen and carbon dioxide in the leaf (as well as the loss of water vapor in transpiration) occurs through pores called stomata (singular = stoma). Normally stomata open when the light strikes the leaf in the morning and close during the night.
5)Gas exchange in plants. plants obtain gases they need through their leave through their leaves. they require oxygen for respiration and carbon dioxide for photosynthesis . the gases diffuse into the intercellular spaces of the leaf through pores ,which are normally on underside of the leaf--stomata .