Question

Qus: 7) Explain given points with the context of respiration and transportation: [2]
a) What type of arrangement exists in the bodies of large animals to meet their oxygen
requirement adequately?
b) How do the guard cells regulate opening and closing of stomatal pores?​

Answer 1

Answer:

Explanation:

n physiology, respiration is the movement of oxygen from the outside environment to the cells within tissues, and the transport of carbon dioxide in the opposite direction.

The physiological definition of respiration differs from the biochemical definition, which refers to a metabolic process by which an organism obtains energy (in the form of ATP and NADPH) by oxidising nutrients and releasing waste products. Although physiologic respiration is necessary to sustain cellular respiration and thus life in animals, the processes are distinct: cellular respiration takes place in individual cells of the organism, while physiologic respiration concerns the diffusion and transport of metabolites between the organism and the external environment.