1996 General Studies, all questions
UPSC Prelims 1996 · General Studies
Question 99: Science and Technology
Fat present below the skin surface in our body acts as a barrier against
aloss of heat from the body
bloss of essential body fluids
closs of salts from the body
dentry of harmful micro-organisms from the environment
AnswerThe answer is (a).
The layer of fat under the skin (subcutaneous fat) is a poor conductor of heat and works as insulation, reducing the loss of body heat, especially in cold conditions. Water loss is checked by the skin's outer layers, and microbes are kept out by the skin and its secretions. Remember: subcutaneous fat - insulation and energy store.
Why each option is right or wrong
- (a) Right: fat under the skin insulates the body against heat loss.
- (b) Fluid loss is checked by the skin's outer layers, not by fat.
- (c) Salt loss is controlled by the kidneys and sweat glands, not by fat.
- (d) The skin and its secretions keep out microbes.
Explanation: written by UPSC Grade, not by UPSC.
Source: UPSC, Civil Services (Preliminary) Examination 1996, General Studies. UPSC's own paper isn't online; the words are from a published compilation. The paper on upsc.gov.in.