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NEET - September 2020 Previous Year Questions



NEET Biology Previous Year Questions - September 2020

Match the following columns and select the correct option.

Column-I Column-II
(A)Floating Ribs (I)Located between second and seventh ribs
(B)Acromion (II)Head of the Humerus
(C)Scapula (III)Clavicle
(D)Glenoid cavity (IV)Do not connect with the sternum

[class-xi ]

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

    Remark:

Match the following columns and select the correct option.

Column-I Column-II
(A)Organ of Corti (I)Connects middle ear and pharynx
(B)Cochlea (II)Coiled part of the labyrinth
(C)Eustachian tube (III)Attached to the oval window
(D)Stapes (IV)Located on the basilar membrane

[class-xi ]

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

    Remark:

Snow-blindness in Antarctic region is due to:

[class-xi ]

  • Freezing of fluids in the eye by low temperature
  • Inflammation of cornea due to high dose of UV-B radiation
  • High reflection of light from snow
  • Damage to retina caused by infra-red rays
  • Correct Option: B  [ Inflammation of cornea due to high dose of UV-B radiation ]

    Remark:

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)Addison's disease

[class-xi ]

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

    Remark:

Select the correct statement.

[class-xi ]

  • Glucocorticoids stimulate gluconeogenesis.
  • Glucagon is associated with hypoglycemia.
  • Insulin acts on pancreatic cells and adipocytes.
  • Insulin is associated with hyperglycemia.
  • Correct Option: A  [ Glucocorticoids stimulate gluconeogenesis. ]

    Remark:

Strobili or cones are found in:

[class-xii ]

  • Salvinia
  • Pteris
  • Marchantia
  • Equisetum
  • Correct Option: D  [ Equisetum ]

    Remark:

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

[class-xii ]

  • insects or wind
  • water currents only
  • wind and water
  • insects and water
  • Correct Option: A  [ insects or wind ]

    Remark:

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

[class-xii ]

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

    Remark:

Match the following columns and select the correct option.

Column-I Column-II
(A)Placenta (I)Androgens
(B)Zona pellucida (II)Human Chorionic Gonadotropin (hCG)
(C)Bulbo-urethral glands (III)Layer of the ovum
(D)Leydig cells (IV)Lubrication of the Penis

[class-xii ]

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

    Remark:

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

[class-xii ]

  • High concentration of Estrogen
  • High concentration of Progesterone
  • Low concentration of LH
  • Low concentration of FSH
  • Correct Option: A  [ High concentration of Estrogen ]

    Remark: