Previous year MCQs

General science UPPSC 1996 GS-I
Question

Desert plants have longer root system because:

Answer & Solution

Answer: (Detailed Solution Below)

Option B: Root grow in search of water

Detailed Solution:

The correct answer is “Root grow in search of water”.
Desert plants have long roots to absorb water from deep below the ground's surface because they grow in dry areas with little rainfall. Their roots can reach deeper, more humid layers of soil, especially during droughts. The mesquite tree has the longest roots of any desert plant, reaching up to 24 meters in length.

Similar Questions:

The mirror used by a dentist to examine the teeth of patients is
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  2. B) Convex
  3. C) Plane
  4. D) Cylinderical
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  1. A) killing of germs (bacteria)
  2. B) reducing the rate of biochemical reaction
  3. C) destroying the enzyme action
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  1. A) First Five-year Plan
  2. B) Second Five-Year Plan
  3. C) Third Five-Year Plan
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Which one of the following concerns soil?
  1. A) Edaphic
  2. B) Climatic
  3. C) Biotic
  4. D) Topography
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  1. A) Orthomixo virus
  2. B) Rhino virus
  3. C) Leukaemia virus
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  1. A) Active transport
  2. B) Passive transport
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  4. D) Diffusion
Match list I with list II and select the correct answer from the code given below:
List-I (Acid) - List-II (Source)

A. Lactic acid - 1. Lemon
B. Acetic acid - 2. Rancid butter
C. Citric acid - 3. Milk
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Code:
A B C D
  1. A) 1 4 3 4
  2. B) 3 4 1 2
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