allerySkin excretes
AMostly urine from the kidney
BMostly faeces from the rectum
CMostly bile from the gall bladder
DSweat containing salt and a little urea
Answer & Solution
Correct answer: D. Sweat containing salt and a little urea
1. The chapter lists organs of excretion: kidney, lungs, skin, liver.
2. Sweat glands in the skin secrete water with salts and a little urea.
3. Bile pigments leave through faeces, not skin.
4. So option A is correct.
_Source: Selina Concise Biology Class 10, Ch 8 The Excretory System (Mistral OCR'd PDF), section on other excretory organs_
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