Excretion in Animals and Plants — BIOLOGY STD 7 — Question
ICSE BoardEnglish MediumSTD 7BIOLOGYExcretion in Animals and Plants2 Marks
Question
How do skin and lungs help in excretion ?
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Answer
Skin – excretes excess water, urea, salts and other metabolic wastes in the form of sweat. These waste products are carried by the blood from all body parts to sweat glands in the skin.
Lungs – Eliminate carbon dioxide produced as a result of respiration through the nose.
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