SawaalBoxसवाल बॉक्स
2012 · Q63Science & TechnologyBiologymoderate

Which one of the following sets of elements was primarily responsible for the origin of life on the Earth?

  1. (a)Hydrogen, Oxygen, Sodium
  2. (b)Carbon, Hydrogen, Nitrogen
  3. (c)Oxygen, Calcium, Phosphorus
  4. (d)Carbon, Hydrogen, Potassium
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Official answer(b) Carbon, Hydrogen, Nitrogen

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