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NEET - 2023 Previous Year Questions



NEET Biology Previous Year Questions - 2023

Match List-I with List-II.

List-I List-II
(A)P-wave (I)Beginning of systole
(B)Q-wave (II)Repolarisation of ventricles
(C)QRS complex (III)Depolarisation of atria
(D)T-wave (IV)Depolarisation of ventricles

[class-xi ]

  • A-I, B-II, C-III, D-IV
  • A-III, B-I, C-IV, D-II
  • A-IV, B-III, C-II, D-I
  • A-II, B-IV, C-I, D-III
  • Correct Option: B  [ A-III, B-I, C-IV, D-II ]

    Remark:

Given below are statements: one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: Nephrons are of two types: Cortical & Juxta medullary, based on their relative position in cortex and medulla.
Reason R: Juxta medullary nephrons have short loop of Henle whereas, cortical nephrons have longer loop of Henle.
In the light of the above statements, choose the correct answer from the options given below:

[class-xi ]

  • A is false but R is true.
  • Both A and R are true and R is the correct explanation of A.
  • Both A and R are true but R is NOT the correct explanation of A.
  • A is true but R is false
  • Correct Option: D  [ A is true but R is false ]

    Remark:

Match List-I with List-II.

List-I List-II
(A)Cartilaginous Joint (I)Between flat skull bones
(B)Ball and Socket Joint (II)Between adjacent vertebrae in vertebral column
(C)Fibrous Joint (III)Between carpal and metacarpal of thumb
(D)Saddle Joint (IV)Between Humerus and Pectoral girdle
Choose the correct answer from the options given below:

[class-xi ]

  • A-II, B-IV, C-III, D-I
  • A-III, B-I, C-II, D-IV
  • A-II, B-IV, C-I, D-III
  • A-I, B-IV, C-III, D-II
  • Correct Option: C  [ A-II, B-IV, C-I, D-III ]

    Remark:

Match List-I with List-II with respect to human eye.

List-I List-II
(A)Fovea (I)Visible coloured portion of eye that regulates diameter of pupil.
(B)Iris (II)External layer of eye formed of dense connective tissue.
(C)Blind spot (III)Point of greatest visual acuity or resolution.
(D)Sclera (IV)Point where optic nerve leaves the eyeball and photoreceptor cells are absent.
Choose the correct answer from the options given below:

[class-xi ]

  • A-II, B-I, C-III, D-IV
  • A-III, B-I, C-IV, D-II
  • A-IV, B-III, C-II, D-I
  • A-I, B-IV, C-III, D-II
  • Correct Option: B  [ A-III, B-I, C-IV, D-II ]

    Remark:

Match List-I with List-II.

List-I List-II
(A)CCK (I)Kidney
(B)GIP (II)Heart
(C)ANF (III)Gastric gland
(D)ADH (IV)Pancreas
Choose the correct answer from the options given below:

[class-xi ]

  • A-IV, B-II, C-III, D-I
  • A-IV, B-III, C-II, D-I
  • A-III, B-II, C-IV, D-I
  • A-II, B-IV, C-I, D-III
  • Correct Option: B  [ A-IV, B-III, C-II, D-I ]

    Remark:

Given below are two statements:
Statement I: Vas deferens receives a duct from seminal vesicle and opens into urethra as the ejaculatory duct.
Statement II: The cavity of the cervix is called cervical canal which along with vagina forms birth canal.
In the light of the above statements, choose the correct answer from the options given below:

[class-xii ]

  • Statement I incorrect but Statement II is true.
  • Both Statement I and Statement II are true.
  • Both Statement I and Statement II are false
  • Statement I is correct but Statement II is false.
  • Correct Option: B  [ Both Statement I and Statement II are true. ]

    Remark:

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: Endometrium is necessary for implantation of blastocyst.
Reason R: In the absence of fertilization, the corpus luteum degenerates that causes disintegration of endometrium.
In the light of the above statements, choose the correct answer from the options given below:

[class-xii ]

  • A is false but R is true.
  • Both A and R are true and R is the correct explanation of A.
  • Both A and R are true but R is NOT the correct explanation of A.
  • A is true but R is false.
  • Correct Option: C  [ Both A and R are true but R is NOT the correct explanation of A. ]

    Remark:

Which of the following statements are correct regarding female reproductive cycle?
A. In non-primate mammals cyclical changes during reproduction are called oestrus cycle.
B. First menstrual cycle begins at puberty and is called menopause.
C. Lack of menstruation may be indicative of pregnancy.
D. Cyclic menstruation extends between menarche and menopause.
Choose the most appropriate answer from the options given below:

[class-xii ]

  • A, C and D only
  • A and D only
  • A and B only
  • A, B and C only
  • Correct Option: A  [ A, C and D only ]

    Remark:

Which one of the following common sexually transmitted diseases is completely curable when detected early and treated properly?

[class-xii ]

  • HIV Infection
  • Genital herpes
  • Gonorrhoea
  • Hepatitis-B
  • Correct Option: C  [ Gonorrhoea ]

    Remark:

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: Amniocentesis for sex determination is one of the strategies of Reproductive and Child Health Care Programme.
Reason R: Ban on amniocentesis checks increasing menace of female foeticide.
In the light of the above statements. Choose the correct answer from the options given below:

[class-xii ]

  • A is false but R is true.
  • Both A and R are true and R is the correct explanation of A.
  • Both A and R are true and R is NOT the correct explanation of A.
  • A is true but R is false.
  • Correct Option: A  [ A is false but R is true. ]

    Remark: