AP BIOLOGY

Detailed explanation-1: -Excretion is the physiological process of elimination of metabolic waste from the body. The excretory products include amino acids, urea, uric acid, carbon dioxide, water, and ammonia. Some Molluscs and Echinoderms excrete waste products from the body in the form of amino acids.

Detailed explanation-2: -Excretion involves the separation and elimination of metabolic waste products from the body. Various organs are involved in this process: the lungs, gills, skin, etc.

Detailed explanation-3: -The main excretory organs involved in the removal of metabolic waste products include the liver, kidneys, lungs, and skin. Collectively, these organs help prevent the accumulation of toxic waste products by aiding in their removal.

Detailed explanation-4: -Materials eliminated via the kidney include nitrogenous waste products (ammonia, uric acid, urea, creatine, creatinine, and amino acids), excess quantities of salts and water that may be taken into the body, and various other organic materials produced by life-sustaining chemical reactions.

Detailed explanation-5: -The lungs are responsible for the excretion of gaseous wastes, primarily carbon dioxide from cellular respiration in cells throughout the body. Exhaled air also contains water vapor and trace levels of some other waste gases. The paired kidneys are often considered the main organs of excretion.