Practice NEET 2020 Biology Questions (Phase – 1)

NEET 2020 Biology Questions

NEET Previous year Question Papers is one of the strong tool for the preparation of NEET. So, let’s practice NEET 2020 Biology Question (1st phase, held on 13th September). At the end of this practice session, you can “Check Score” and see the correct answers with explanation.

NEET 2020 Biology Questions


1. Dissolution of the synaptonemal complex occurs during :

 
 
 
 

2. Match the following columns and select the correct option.

NEET 2020 Question, Animal Kingdom

 
 
 
 

3. Which of the following pairs is of unicellular algae?

 
 
 
 

4. Identify the wrong statement with regard to Restriction Enzymes.

 
 
 
 

5. Match the following diseases with the causative organism and select the correct option.

Column – I            Column – II

(a) Typhoid           (i) Wuchereria

(b) Pneumonia     (ii) Plasmodium

(c) Filariasis          (iii) Salmonella

(d) Malaria            (iv) Haemophilus

 
 
 
 

6. The enzyme enterokinase helps in conversion of :

 
 
 
 

7. Identify the incorrect statement.

 
 
 
 

8. Select the correct match.

 
 
 
 

9. The plant parts which consist of two generations one within the other :

(a) Pollen grains inside the anther

(b) Germinated pollen grain with two male gametes

(c) Seed inside the fruit

(d) Embryo sac inside the ovule

 
 
 
 

10. How many true breeding pea plant varieties did Mendel select as pairs, which were similar except in one character with contrasting traits?

 
 
 
 

11. Match the following concerning essential elements and their functions in plants :

NEET 2020 Questions, Plant Mineral

Select the correct option :

 
 
 
 

12. Floridean starch has structure similar to :

 
 
 
 

13. Which of the following is the most abundant protein in the animals ?

 
 
 
 

14. The number of substrate level phosphorylations in one turn of citric acid cycle is :

 
 
 
 

15. Identify the correct statement with regard to G1 phase (Gap 1) of interphase.

 
 
 
 

16. The body of the ovule is fused within the funicle at :

 
 
 
 

17. Which of the following is correct about viroids ?

 
 
 
 

18. Cuboidal epithelium with brush border of microvilli is found in :

 
 
 
 

19. The first phase of translation is :

 
 
 
 

20. The roots that originate from the base of the stem are :

 
 
 
 

21. In water hyacinth and water lily, pollination takes place by :

 
 
 
 

22. Identify the wrong statement with reference to the gene ‘I’ that controls ABO blood groups.

 
 
 
 

23. Snow-blindness in Antarctic region is due to :

 
 
 
 

24. Which of the following regions of the globe exhibits highest species diversity?

 
 
 
 

25. The transverse section of a plant shows following anatomical features:

(a) Large number of scattered vascular bundles surrounded by bundle sheath.

(b) Large conspicuous parenchymatous ground tissue.

(c) Vascular bundles conjoint and closed.

(d) Phloem parenchyma absent.

Identify the category of plant and its part :

 
 
 
 

26. Name the enzyme that facilitates opening of DNA helix during transcription.

 
 
 
 

27. Embryological support for evolution was disapproved by :

 
 
 
 

28. Which is the important site of formation of glycoproteins and glycolipids in eukaryotic cells ?

 
 
 
 

29. Which of the following statements is not correct ?

 
 
 
 

30. Identify the wrong statement with reference to immunity.

 
 
 
 

31. The infectious stage of Plasmodium that enters the human body is :

 
 
 
 

32. The sequence that controls the copy number of the linked DNA in the vector, is termed :

 
 
 
 

33. From his experiments, S.L. Miller produced amino acids by mixing the following in a closed flask :

 
 
 
 

34. Match the following columns and select the correct option.

NEET 2020 Question, Human Reproduction

 
 
 
 

35. Which of the following statements are true for the phylum-Chordata ?

(a) In Urochordata notochord extends from head to tail and it is present throughout their life.

(b) In Vertebrata notochord is present during the embryonic period only.

(c) Central nervous system is dorsal and hollow.

(d) Chordata is divided into 3 subphyla : Hemichordata, Tunicata and Cephalochordata.

 
 
 
 

36. Which of the following statements about inclusion bodies is incorrect ?

 
 
 
 

37. Montreal protocol was signed in 1987 for control of :

 
 
 
 

38. Goblet cells of alimentary canal are modified from :

 
 
 
 

39. Strobili or cones are found in :

 
 
 
 

40. Bilaterally symmetrical and acoelomate animals are exemplified by :

 
 
 
 

41. Which of the following is put into Anaerobic sludge digester for further sewage treatment ?

 
 
 
 

42. Identify the correct statement with reference to human digestive system.

 
 
 
 

43. Match the following columns and select the correct option :

Column-I                   Column-II

(a) Pituitary gland     (i) Grave’s disease

(b) Thyroid gland      (ii) Diabetes mellitus

(c) Adrenal gland      (iii) Diabetes insipidus

(d) Pancreas               (iv) Addision’s disease

 
 
 
 

44. In which of the following techniques, the embryos are transferred to assist those females who cannot conceive?

 
 
 
 

45. Match the trophic levels with their correct species examples in grassland ecosystem.

NEET 2020 Questions, Ecosystem

Select the correct option :

 
 
 
 

46. Choose the correct pair from the following :

 
 
 
 

47. Match the following columns and select the correct option.

NEET 2020 Question, Microbes

 
 
 
 

48. Experimental verification of the chromosomal theory of inheritance was done by :

 
 
 
 

49. Presence of which of the following conditions in urine are indicative of Diabetes Mellitus ?

 
 
 
 

50. Some dividing cells exit the cell cycle and enter vegetative inactive stage. This is called quiescent stage (G0). This process occurs at the end of :

 
 
 
 

51. Which of the following is not an inhibitory substance governing seed dormancy?

 
 
 
 

52. According to Robert May, the global species diversity is about :

 
 
 
 

53. If the head of cockroach is removed, it may live for few days because :

 
 
 
 

54. The QRS complex in a standard ECG represents:

 
 
 
 

55. Match the following columns and select the correct option.

NEET 2020 Question, Blood

 
 
 
 

56. In gel electrophoresis, separated DNA fragments can be visualized with the help of :

 
 
 
 

57. Identify the substances having glycosidic bond and peptide bond, respectively in their structure :

 
 
 
 

58. Name the plant growth regulator which upon spraying on sugarcane crop, increases the length of stem, thus increasing  the yield of sugarcane crop.

 
 
 
 

59. Match the following :

NEET 2020 Paper Biomolecules

Choose the correct option from the following :

 
 
 
 

60. If the distance between two consecutive base pairs is 0.34 nm and the total number of base pairs of a DNA double helix in a typical mammalian cell is 6.6 × 109 bp, then the length of the DNA is approximately :

 
 
 
 

61. Select the option including all sexually transmitted diseases :

 
 
 
 

62. Which of the following is not an attribute of a population?

 
 
 
 

63. Secondary metabolites such as nicotine, strychnine and caffeine are produced by plants for their :

 
 
 
 

64. The specific palindromic sequence which is recognized by EcoRI is :

 
 
 
 

65. Meiotic division of the secondary oocyte is completed :

 
 
 
 

66. Match the organism with its use in biotechnology.

NEET 2020 Question, Biotechnology

Select the correct option from the following:

 
 
 
 

67. The product(s) of reaction catalyzed by nitrogenase in root nodules of leguminous plants is/are :

 
 
 
 

68. Which of the following statements is correct ?

 
 
 
 

69. In relation to Gross primary productivity and Net primary productivity of an ecosystem, which one of the following statements is correct ?

 
 
 
 

70. The ovary is half inferior in :

 
 
 
 

71. Match the following columns and select the correct option.

NEET 2020 Question,  Human Skeletal System

 
 
 
 

72. Identify the wrong statement with reference to transport of oxygen.

 
 
 
 

73. Which of the following hormone levels will cause release of ovum (ovulation) from the graffian follicle?

 
 
 
 

74. Which of the following would help in prevention of diuresis ?

 
 
 
 

75. Match the following columns and select the correct option.

Column – I                  Column – II

(a) Bt cotton                (i) Gene therapy

(b) ADA deficiency   (ii) Cellular defence

(c) RNAi infection    (iii) Detection of HIV

(d) PCR                        (iv) Bacillus thuringiensis

 
 
 
 

76. Select the correct statement.

 
 
 
 

77. Flippers of Penguins and Dolphins are examples of :

 
 
 
 

78. Identify the basic amino acid from the following.

 
 
 
 

79. Select the correct events that occur during inspiration.

(a) Contraction of diaphragm

(b) Contraction of external inter-costal muscles

(c) Pulmonary volume decreases

(d) Intra pulmonary pressure increases

 
 
 
 

80. Ray florets have :

 
 
 
 

81. The oxygenation activity of RuBisCo enzyme in photorespiration leads to the formation of :

 
 
 
 

82. The process reponsible for facilitating loss of water in liquid form from the tip of grasss blades at night and in early morning is :

 
 
 
 

83. By which method was a new breed ‘Hisardale’ of sheep formed by using Bikaneri ewes and Marino rams ?

 
 
 
 

84. Match the following column with respect to meiosis :

NEET 2020 Question Meiosis

 
 
 
 

85. Which of the following refer to correct example(s) of organisms which have evolved due to changes in environment brought about by anthropogenic action?

(a) Darwin’s Finches of Galapagos islands.

(b) Herbicide resistant weeds.

(c) Drug resistant eukaryotes.

(d) Man-created breeds of domesticated animals like dogs.

 
 
 
 

86. Match the following columns and select the correct option.

NEET 2020 paper Animal Kingdom

 
 
 
 

87. Bt cotton variety that was developed by the introduction of toxin gene of Bacillus thuringiensis (Bt) is resistant to :

 
 
 
 

88. The process of growth is maximum during :

 
 
 
 

89. Match the following columns and select the correct option.

NEET 2020 paper Human Ear

 
 
 
 

90. In light reaction, plastoquinone facilitates the transfer of electrons from :

 
 
 
 

Question 1 of 90


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