Question

Kidneys, skin, and lungs are
(a) Excretory organs
(b) Digestive organs
(c) Reproductive organs
(d) None of the above

Answer 1

Hint: The respiratory system's main job is to move fresh air into your body and remove waste gases. Sweat glands in the skin secrete a fluid waste called sweat or perspiration. Kidneys filter waste and remove excess fluids from your blood.

Complete answer:
The lungs, kidneys, and skin are excretory organs. lungs are part of the respiratory system. Every cell of the body needs oxygen to stay alive and healthy. Our body also needs to get rid of carbon dioxide. This gas is a waste product that is made by the cells during their normal function. So, the Excess carbon dioxide is removed from the body through the lungs. Kidneys are the primary organs of excretion in our bodies. Excess urea, water, and salts are removed by the kidneys in the form of urine. The skin is an organ of protection
The primary function of the skin is to act as a barrier. Skin removes excess of water and salt through the skin also. Thus skin also has an excretory role.

Additional Information:
- Skin helps in Maintaining the balance of fluids in the body, regulating body temperature, Sensing pressure, and pain. it insulates our body, conserves heat in cold conditions, and perspires to cool the body down when it gets hot.
absorbing shock and alerting us to danger.
- Lungs are the part of the respiratory system, a group of organs that helps in breathing. It is the principal organ of respiration. The main function of the lungs is the process of gas exchange.
- The kidneys are a pair of bean-shaped organs on either side of your spine. The main function of kidneys is to filter your blood and remove excess wastes from the body.
So, the correct answer is '(a) Excretory organs'.

Note:
- The lungs are a pair of spongy, air-filled organs located on either side of the chest.
- Kidneys are compound tubular glands. Each kidney is formed of about millions of coiled tubules, known as nephrons.
- These are the structural and functional units of the kidneys.