NEET Questions Biology 2018 (21-30)

21. Natality refers to

(1) Number of individuals leaving the habitat
(2) Birth rate
(3) Death rate
(4) Number of individuals entering a habitat

Answer (2) Birth rate

22. World Ozone Day is celebrated on

(1) 16th September
(2) 21 st April
(3) 5th June
(4) 22nd April

Answer (1) 16th September

23. Which of the following is a secondary pollutant?
(1) SO2 (2) CO2 (3) CO (4) O3

Answer 4) O3

24. Niche is
(1) the range of temperature that the organism needs to live
(2) the physical space where an organism lives
(3) all the biological factors in the organism's environment
(4) the functional role played by the organism where it lives

Answer (4)the functional role played by the organism where it lives

25. What type of ecological pyramid would be obtained with the following data?

           Secondary consumer : 120 g

           Primary consumer : 60 g

           Primary producer : 10 g

(1) Upright pyramid of numbers

(2) Pyramid of energy

(3) Inverted pyramid of biomass

(4) Upright pyramid of biomass

Answer(3) Inverted pyramid of biomass

26. In stratosphere, which of the following elements acts as a catalyst in degradation of ozone and release of molecular oxygen?
(1) Fe (2) Cl (3) Carbon (4) Oxygen

Answer (2) Cl 

27. The two functional groups characteristic of sugars are
(1) Carbonyl and phosphate
(2) Carbonyl and methyl
(3) Hydroxyl and methyl
(4) Carbonyl and hydroxyl

Answer (4) Carbonyl and hydroxyl

28. Which among the following is not a prokaryote?
(1) Nostoc
(2) Mycobacterium
(3) Saccharomyces
(4) Oscillatoria

Answer: (3) Saccharomyces

29. The Golgi complex participates in
(1) Respiration in bacteria
(2) Formation of secretory vesicles
(3) Fatty acid breakdown
(4) Activation of amino acid

Answer:(2) Formation of secretory vesicles

30. Which of the following is not a product of light reaction of photosynthesis?
(1) NADPH (2) NADH
(3) ATP (4) Oxygen

Answer: (2) NADH