Biology · NDA previous year questions

2016 15 questions

1. Q612016 · 18 Sept 2016

   Which one of the following statements is not correct?

   1. A.Pitch of a sound is its characteristic by which we can generally differentiate between a male voice and a female voice
   2. B.The loudness of sound is related to its frequency
   3. C.A musical sound has certain well defined frequencies which are generally harmonics of a fundamental frequency
   4. D.The timbre of a particular musical sound is related to the waveform of the sound wave
   Show answer

   Answer: B

2. Q822016 · 18 Sept 2016

   Fluoride toothpaste is sometimes recommended because fluoride

   1. A.prevents plaque formation
   2. B.hardens the enamel of the tooth
   3. C.kills pathogenic bacteria
   4. D.prevents tooth ache
   Show answer

   Answer: B

3. Q862016 · 18 Sept 2016

   If one mixes up ashes with animal fat, the substance received in the crude form is called

   1. A.Pheromone
   2. B.Soap
   3. C.Cement
   4. D.Concrete
   Show answer

   Answer: B

4. Q902016 · 18 Sept 2016

   The genetic material of bacteria is found in

   1. A.nucleus
   2. B.cytoplasm
   3. C.cell membrane
   4. D.ribosome
   Show answer

   Answer: B

5. Q912016 · 18 Sept 2016

   A horse and a donkey can breed to produce mule which is an infertile animal. The infertility is because horse and donkey belong to different

   1. A.class
   2. B.order
   3. C.species
   4. D.genus
   Show answer

   Answer: C

6. Q922016 · 18 Sept 2016

   A plant having yellow leaves with dead spots has the deficiency of

   1. A.Potassium
   2. B.Magnesium
   3. C.Nitrate
   4. D.Phosphate
   Show answer

   Answer: A

7. Q932016 · 18 Sept 2016

   Consider the following statements about cactus : 1. The leaves are reduced to spines. 2. The stem does the photosynthesis. Which of the statements given above is/are correct?

   1. A.1 only
   2. B.2 only
   3. C.Both 1 and 2
   4. D.Neither 1 nor 2
   Show answer

   Answer: C

8. Q942016 · 18 Sept 2016

   In which one of the following, methanogens, i.e., methane producing bacteria are not present?

   1. A.Rumen of cattle
   2. B.Aerobic environment
   3. C.Anaerobic sludge
   4. D.Excreta of cattle
   Show answer

   Answer: B

9. Q952016 · 18 Sept 2016

   Malarial parasite is a

   1. A.bacteria
   2. B.protozoa
   3. C.virus
   4. D.fungus
   Show answer

   Answer: B

10. Q962016 · 18 Sept 2016

    It is difficult to kill viruses because they

    1. A.consist of tough protein coat
    2. B.are very small in size
    3. C.lack cellular structure
    4. D.spend a lot of time inside the host’s cells
    Show answer

    Answer: D

11. Q982016 · 18 Sept 2016
    Passage

    The following 6 (Six) items consist of two statements, Statement I and Statement II. Examine these two statements carefully and select the correct answer using the code given below : Code : Statement I : Ozone is a tri-atomic molecule of oxygen.

    Statement I : Too much salt content in diet could be one of the reasons for kidney failure. Statement II : High salt may cause high blood pressure.

    1. A.Both the statements are individually true and Statement II is the correct explanation of Statement I
    2. B.Both the statements are individually true but Statement II is not the correct explanation of Statement I
    3. C.Statement I is true but Statement II is false
    4. D.Statement I is false but Statement II is true
    Show answer

    Answer: A

12. Q892016 · 17 Apr 2016

    To prevent heart problems, blood of a normal healthy person should have 1. low cholesterol level. 2. high HDL level. 3. high VLDL level. 4. high LDL level. Select the correct answer using the code given below :

    1. A.1 and 2 only
    2. B.1, 2 and 4 only
    3. C.3 and 4 only
    4. D.1, 2 and 3 only
    Show answer

    Answer: A

13. Q902016 · 17 Apr 2016

    Which of the following pairs of vector and disease is/are correctly matched ? $$\begin{array}{llll}& \text{Vector}& & \text{Disease}\\ 1.& \text{Anopheles}& :& \text{Malaria}\\ 2.& \text{Aedes aegypti}& :& \text{Chikungunya}\\ 3.& \text{Tsetse fly}& :& \text{Filariasis}\\ 4.& \text{Bed bugs}& :& \text{Sleeping sickness}\end{array}$$ Select the correct answer using the code given below :

    1. A.1, 2 and 3 only
    2. B.1 and 2 only
    3. C.1 and 4 only
    4. D.2 only
    Show answer

    Answer: B

14. Q922016 · 17 Apr 2016

    Which of the following statements about DNA is/are correct ? 1. DNA is the hereditary material of all living organisms. 2. All segments of DNA code for synthesis of proteins. 3. Nuclear DNA is double helical with two nucleotide chains which run anti-parallel. 4. DNA is also found in mitochondria. Select the correct answer using the code given below :

    1. A.1, 2 and 3 only
    2. B.3 and 4 only
    3. C.1, 3 and 4 only
    4. D.4 only
    Show answer

    Answer: B

15. Q982016 · 17 Apr 2016

    Match List I with List II and select the correct answer using the code given below the Lists: $$\begin{array}{ll}\text{List I}& \text{List II}\\ \text{(Molecule)}& \text{(Product of digestion)}\\ \text{A. Proteins}& \text{1. Nitrogenous bases and pentose sugars}\\ \text{B. Carbohydrates}& \text{2. Fatty acids and glycerol}\\ \text{C. Nucleic acids}& \text{3. Monosaccharides}\\ \text{D. Lipids}& \text{4. Amino acids}\end{array}$$ Code: A B C D

    1. A.2 3 1 4
    2. B.2 1 3 4
    3. C.4 1 3 2
    4. D.4 3 1 2
    Show answer

    Answer: D