Biology · NDA previous year questions

2020 6 questions

1. Q682020 · 6 Sept 2020

   Which one of the following cell organelles may play a role in expelling excess water and wastes in case of unicellular organisms ?

   1. A.Lysosome
   2. B.Vacuole
   3. C.Golgi body
   4. D.Endoplasmic reticulum
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   Answer: B

2. Q702020 · 6 Sept 2020

   Which one of the following statements is correct about effects of antibiotics on viruses ?

   1. A.Viruses are “non-living” entities but it can interact with antibiotics
   2. B.Taking antibiotics cures viral infections
   3. C.Viruses do not possess metabolic pathways on which antibiotics can function, whereas bacteria have such pathways
   4. D.Viruses are resistant to antibiotics
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   Answer: C

3. Q742020 · 6 Sept 2020

   Which one of the following statements is NOT correct ?

   1. A.Biomass is a renewable source of energy
   2. B.Gobar gas is produced when cow-dung, crop residues, vegetable waste and sewage are allowed to decompose in the absence of oxygen
   3. C.Biogas generation reduces soil and water pollution
   4. D.Heating capacity of biogas is very low
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   Answer: D

4. Q752020 · 6 Sept 2020

   In prokaryotic organisms, nuclear region is not surrounded by a membrane. This undefined nuclear region is known as

   1. A.Nucleic acid
   2. B.Nucleoid
   3. C.Nucleolus
   4. D.Nucleosome
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   Answer: B

5. Q762020 · 6 Sept 2020

   Which one of the following plant tissues has dead cells ?

   1. A.Epidermis
   2. B.Parenchyma
   3. C.Collenchyma
   4. D.Sclerenchyma
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   Answer: D

6. Q952020 · 6 Sept 2020

   Which one of the following statements regarding Bleaching powder and D.D.T. is correct ?

   1. A.Both are inorganic compounds
   2. B.Both are organic compounds
   3. C.Both contain chlorine
   4. D.Both contain calcium
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   Answer: C