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NEET - October 2020 Previous Year Questions



NEET Biology Previous Year Questions - October 2020

Select the correct statement:

[class-xi ]

  • Atrial Natriuretic Factor increases the blood pressure.
  • Angiotensin II is a powerful vasodilator.
  • Counter current pattern of blood flow is not observed in vasa recta.
  • Reduction in Glomerular Filtration Rate activates JG cells to release renin.
    • Correct Option: D  [ Reduction in Glomerular Filtration Rate activates JG cells to release renin. ]

    Remark:

Select the incorrectly matched pair from following:

[class-xi ]

  • Chondrocytes - Smooth muscle cells
  • Neurons - Nerve cells
  • Fibroblast - Areolar tissue
  • Osteocytes - Bone cells
    • Correct Option: A  [ Chondrocytes - Smooth muscle cells ]

    Remark:

Match the following columns and select the correct option:

Column-I Column-II
(A)Gout (I)Decreased levels of estrogen
(B)Osteoporosis (II)Low Ca++ ions in the blood
(C)Tetany (III)Accumulation of uric acid crystals
(D)Muscular dystrophy (IV)Auto immune disorder
(V)Genetic disorder

[class-xi ]

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

    Remark:

Which of the following is associated with decrease in cardiac output?

[class-xi ]

  • Sympathetic nerves
  • Parasympathetic neural signals
  • Pneumotaxic centre
  • Adrenal medullary hormones
    • Correct Option: B  [ Parasympathetic neural signals ]

    Remark:

Match the following columns and select the correct option:

Column-I Column-II
(A)Rods and Cones (I)Absence of photoreceptor cells
(B)Blind Spot (II)Cones are densely packed
(C)Fovea (III)Photoreceptor cells
(D)Iris (IV)Visible coloured portion of the eye

[class-xi ]

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

    Remark:

Match the following columns and select the correct option:

Column-I Column-II
(A)Pituitary hormone (I)Steroid
(B)Epinephrine (II)Neuropeptides
(C)Endorphins (III)Peptides, proteins
(D)Cortisol (IV)Biogenic amines

[class-xi ]

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

    Remark:

Hormones stored and released from neurohypophysis are:

[class-xi ]

  • Thyroid stimulating hormone and Oxytocin
  • Oxytocin and Vasopressin
  • Follicle stimulating hormone and Leutinizing hormone
  • Prolactin and Vasopressin
    • Correct Option: B  [ Oxytocin and Vasopressin ]

    Remark:

Vegetative propagule in Agave is termed as:

[class-xii ]

  • Rhizome
  • Bulbil
  • Offset
  • Eye
    • Correct Option: B  [ Bulbil ]

    Remark:

Which of the following is incorrect for wind-pollinated plants?

[class-xii ]

  • Well exposed stamens and stigma
  • Many ovules in each ovary
  • Flowers are small and not brightly coloured
  • Pollen grains are light and non-sticky
    • Correct Option: B  [ Many ovules in each ovary ]

    Remark:

In some plants thalamus contributes to fruit formation. Such fruits are termed as:

[class-xii ]

  • False fruits
  • Aggregate fruits
  • True fruits
  • Parthenocarpic fruit
    • Correct Option: A  [ False fruits ]

    Remark:
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