Selina ICSE Solutions for Class 9 Biology Chapter 13 Skin- “The Jack of All Trades” Exercise 1 A. Mutiple Choice Questions: 1. If for some reason the sebaceous glands fail to function, (a) the body will not be able to regulate the body temperature (b) the skin will turn darker with more melanin (c) the hairs will fail to grow (d) the skin will turn dry and rough 2. Which one pair of two conditions includes both as abnormal conditions of skin pigmentation? (a) Leucoderma, Ringworm (b) Albinism, Leucoderma (c) Baldness, Albinism (d) Rickets, Baldness 3. Which one out of the organs listed below, most actively functions in regulating our body temperature? (a) Heart (b) Lungs (c) Skin (d) Stomach 4. Sweat glands are situated in: (a) Epidermis (b) Dermis (c) Both (d) None of the above 5. The epidermis is highly thickened in: (a) Eyelid (b) Thigh (c) Lip (d) Palm Solution A. 1. (d) the skin will turn dry and rough 2. (b) Albinism, Leucod...
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