BIOLOGY TIMES — January 2018

(ff) #1

  1. Which is correct to say about the hormone action
    in humans?
    (a) Glucagon is secreted by the β-cells of islets
    of Langerhans and stimulate glycogenolysis.
    (b) Secretion of thymosin is stimulated with
    aging.
    (c) In females, FSH first binds with specific
    receptors on ovarian cell membrane.
    (d) FSH stimulates the secretion of estrogen and
    progesterone.

  2. Match the column I and column II
    Column II Column II
    p) CMI i) Virus of AIDS
    q) PMNL ii) Mucosal Associated
    lymphoid tissue
    r) MALT iii) Cell Mediated
    Immunity
    s) HIV iv) Leucocytes
    (a) p-iii, q-iv, r-ii, s-ii (b) p-ii, q-iii, r-iv, s-i
    (c) p-iii, q-ii, r-iv, s-i (d) p-ii, q-iv, r-i, s-iii

  3. In the life cycle of Ascaris lumbricoids, the
    intermediate host is
    (a) Cattle (b) Snail
    (c) Man (d) None of the above

  4. Macromolecule chitin is
    (a) Sulphur containing polysaccharide
    (b) Simple polysaccharide
    (c) Nitrogen containing polysaccharide
    (d) Phosphorus containing polysaccharide

  5. Which hormone is secreted by two layers of the
    adrenal cortex?
    (a) Sexocorticoids (b) Glucocorticoids
    (c) Mineralocorticoids (d) Epinephrine

  6. Match the following
    Column I Column II
    A. Zygomatic bone 1. Smallest bone of face
    B. Lacrimal bone 2. Floor of cranium
    C. Parietal Bone 3. Cheek bone of cranium
    D. Sphenoid Bone 4. Roof of cranium
    (a) A- 3, B-1, C-4, D-2 (b) A- 4, B- 2, C- 1, D-
    (c) A- 2, B- 3, C-4, D-1 (d) A-1, B-4, C- 3, D-

  7. Consider the following four measures (A-D) that
    could be taken successfully to grow chick pea in
    an area where bacterial bright disease is common
    (A) Spray with Bordeaux mixture.
    (B) Control of the insect vector of the disease
    pathogen.
    (C) Use of only disease-free seeds.
    (D) Use of resistant varieties.
    (a) A & D (b) B & C
    (c) A & B (d) C & D
    26. People living at sea level have around 5 million
    RBC per cubic millimetre of their blood whereas
    those living at an altitude of 5400 metre have
    around 8 million. This is because at high altitude
    (a) Atmospheric O 2 level is less and hence, more
    RBCs are needed to absorb the required
    amount of O 2 to survive
    (b) There is more UV radiation which enhances
    RBC production
    (c) People eat more nutritive food, therefore,
    more RBCs are formed
    (d) People get pollution-free air to breathe and
    more oxygen is available
    27. Proximal and distal convoluted tubules are parts
    of
    (a) Seminiferous tubules(b) Nephron
    (c) Oviduct (d) Vas deferens
    28. Which STD causes damage to the eyes of babies
    born to infected mothers?
    (a) Gonorrhoea (b) Syphilis
    (c) AIDS (d) Hepatitis
    29. Hepatitis C virus
    (a) May be transmitted by blood
    (b) Has one stable genotype only
    (c) May cause chronic infection
    (d) Both b and c
    30. In adult man, normal blood pressure is:
    (a) 80/120 mmHg (b) 100/80 mmHg
    (c) 120/80 mmHg (d) 100/120 mmHg
    31. Match column I with column II and select the
    correct options from the codes given below.
    Column I Column II
    A. Renal portal system 1. Sponges
    B. Open circulation 2. Birds
    C. Water circulation 3.Kidneys
    D. Venous heart 4.Cockroach
    5. Fishes
    (a) A-3, B-4, C-2, D-1 (b) A-2, B-1, C-5, D-
    (c) A-4, B-3, C-2, D-1 (d) A-3, B-4, C-1, D-
    32. Assertion : The establishment of Reproductive
    isolation is an event of biological significance
    Reason: In the absence of reproductive isolation,
    species can merge back into single population
    (a) Both Assertion and Reason are true and
    Reason is the correct explanation of Assertion.
    (b) Both Assertion and Reason are true and but
    Reason is not the correct explanation of
    Assertion.
    (c) Assertion is true but Reason is false.
    (d) Both Assertion and Reason are false.

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