CLINICAL MEDICINE

Detailed explanation-1: -The main waste gas excreted by the lungs is carbon dioxide, which is a waste product of cellular respiration in cells throughout the body. Carbon dioxide is diffused from the blood into the air in the tiny air sacs called alveoli in the lungs (shown in the inset diagram).

Detailed explanation-2: -The lungs in the respiratory system excrete some waste products, such as carbon dioxide and water.

Detailed explanation-3: -In the human body, carbon dioxide is formed intracellularly as a byproduct of metabolism. CO2 is transported in the bloodstream to the lungs where it is ultimately removed from the body through exhalation.

Detailed explanation-4: -This process, photosynthesis, which occurs in all green plants, converts CO2 and water to carbohydrates, releasing oxygen as a waste product.

Detailed explanation-5: -Carbon dioxide, excess water produced during respiration and nitrogenous compounds produced during protein metabolism are the major excretory products in plants. Plants produce two gaseous waste products i.e. oxygen during photosynthesis and carbon dioxide during respiration.