2025 NEET Biology Practice Test|Exam Questions 51-60

51. Match List I with List II.
List I: A. Scutellum, B. Non-albuminous, C. Epiblast, D. Perisperm
List II: I. Persistent nucellus, II. Cotyledon of Monocot seed, III. Groundnut, IV. Rudimentary cotyledon
Choose the option with all correct matches.

(1) A-II, B-III, C-IV, D-I (2) A-IV, B-III, C-II, D-I (3) A-IV, B-III, C-I, D-II (4) A-II, B-IV, C-III, D-I

52. Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): All vertebrates are chordates but all chordates are not vertebrate.
Reason (R): The members of subphylum vertebrata possess notochord, during the embryonic period, the notochord is replaced by a cartilaginous or bony vertebral column in adults.
In the light of the above statements, choose the correct answer from the options given below:

(1) Both A and R are true and R is the correct explanation of A (2) Both A and R are true but R is not the correct explanation of A (3) A is true but R is false (4) A is false but R is true

53. Identify the statement that is NOT correct.

(1) Each antibody has two light and two heavy chains. (2) The heavy and light chains are held together by disulfide bonds. (3) Antigen binding site is located at C-terminal region of antibody molecules. (4) Constant region of heavy and light chains are located at C-terminus of antibody molecules.

54. Silencing of specific mRNA is possible via RNAi because of -

(1) Complementary dsRNA (2) Inhibitory ssRNA (3) Complementary tRNA (4) Non-complementary ssRNA

55. Genes R and Y follow independent assortment. If RRYY produce round yellow seeds and rryy produce wrinkled green seeds, what will be the phenotypic ratio of the F2 generation?

(1) Phenotypic ratio - 1 : 2 : 1 (2) Phenotypic ratio - 3 : 1 (3) Phenotypic ratio - 9 : 3 : 3 : 1 (4) Phenotypic ratio - 9 : 7

56. Histones are enriched with -

(1) Lysine & Arginine (2) Leucine & Lysine (3) Phenylalanine & Leucine (4) Phenylalanine & Arginine

57. The first menstruation is called:

(1) Menopause (2) Menarche (3) Diapause (4) Ovulation

58. Match List - I with List - II.
List - I: A. Heart, B. Kidney, C. Gastro-intestinal tracts, D. Adrenal Cortex
List - II: I. Erythropoietin, II. Aldosterone, III. Atrial natriuretic factor, IV. Secretin
Choose the correct answer from the options given below:

(1) A-II, B-I, C-III, D-IV (2) A-IV, B-III, C-II, D-I (3) A-I, B-III, C-IV, D-II (4) A-III, B-I, C-IV, D-II

59. The protein portion of an enzyme is called:

(1) Cofactor (2) Coenzyme (3) Apoenzyme (4) Prosthetic group

60. Which of the following is the unit of productivity of an Ecosystem?

(1) gm–2 (2) KCal m–2 (3) KCal m–3 (4) (KCal m–2)yr–1

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