SawaalBoxसवाल बॉक्स
2002 · Q43Science & TechnologyBiologymoderate

In the context of the organic evolution, the loss of limbs of snakes is explained by the phenomenon of

  1. (a)use and disuse of organs
  2. (b)adaptation to living in burrows
  3. (c)natural selection
  4. (d)inheritance of acquired characters
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Official answer(a) use and disuse of organs

2020 · Q47Science & TechnologyBiologyeasy

Which of the following statements are correct regarding the general difference between plant and animal cells ? 1. Plant cells have cellulose cell walls whilst animal cells do not. 2. Plant cells do not have plasma membrane unlike animal cells which do. 3. Mature plant cell has one large vacuole whilst animal cell has many small vacuoles. Select the correct answer using the code given below :

  1. (a)1 and 2 only
  2. (b)2 and 3 only
  3. (c)1 and 3 only
  4. (d)1, 2 and 3
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Official answer(c) 1 and 3 only