Question

________ are the main excretory organs in the body.

Answer 1

Excretion:

1. After the breakdown of food, many toxic substances called metabolic wastes are produced inside the body.
2. Removal of this metabolic waste from the body is called excretion.
3. The organs which help in excretion are called excretory organs.

Kidneys:

1. The main excretory organ of the human body is the kidneys.
2. There are one pair of kidneys which filter blood and remove waste products in the form of urine.

Final answer: Kidneys are the main excretory organs in the body.