Question

Q1. Name 2 Main excretory organs.

Q2. Name 2 Accessory Excretory Organs

Answer 1

Dear Student,
Ans1. The excretory organs are:-
The kidneys

• The two kidneys excrete urine, which consists mainly of excess water, mineral salts and nitrogenous wastes from protein breakdown, urea and uric acid.

The lungs

• The two lungs excrete carbon dioxide and water vapour.

Ans 2. Accessory excretory organ:-
The skin

• The skin excretes sweat, which although more dilute, contains the same excretory substances as urine.
• Foreign substances can be excreted in the hair and the nails.

The liver

• The liver plays a major part as it secretes bile.
• Bile has pigments made from broken-down haemoglobin in the red blood cells.
• The liver also detoxifies poisonous substances that may have entered the body through the alimentary canal.

Regards