Biology Today — January 2018

(Jacob Rumans) #1

  1. Match column I with column II and select the correct option
    from the codes given below.
    Column I Column II
    A. Heart failure (i) Heart muscle is suddenly
    damaged by an inadequate
    blood supply
    B. Cardiac arrest (ii) Chest pain due to inadequate
    O 2 reaching the heart muscles
    C. Heart attack (iii) Atherosclerosis
    D. Coronary artery (iv) Heart does not pump blood
    disease (CAD) effectively enough to meet
    the needs of the body
    E. Angina pectoris (v) Heart stops beating
    (a) A-(iv), B-(v), C-(i), D-(iii), E-(ii)
    (b) A-(v), B-(iv), C-(i), D-(iii), E-(ii)
    (c) A-(iv), B-(v), C-(i), D-(ii), E-(iii)
    (d) A-(v), B-(iv), C-(ii), D-(iii), E-(i)

  2. Which of the following statements is/are true for Bowman’s
    capsule?
    I. It is a single layered cup-shaped structure.
    II. Its lumen is continuous with broad lumen of the renal
    tubule.
    III. Its layer consists of a special type of cells called podocytes.
    (a) I and II only (b) II only
    (c) III only (d) All of these

  3. During ventricular systole,
    (a) oxygenated blood is pumped into the pulmonary artery
    and deoxygenated blood is pumped into the artery
    (b) oxygenated blood is pumped into the aorta and
    deoxygenated blood is pumped into the pulmonary vein
    (c) oxygenated blood is pumped into the pulmonary
    vein and deoxygenated blood is pumped into the
    pulmonary artery
    (d) oxygenated blood is pumped into the aorta and
    deoxygenated blood is pumped into the pulmonary
    artery.

  4. Which of the following causes an increase in sodium
    reabsorption in the distal convoluted tubule?
    (a) Increase in aldosterone level
    (b) Increase in antidiuretic hormone level
    (c) Decrease in aldosterone level
    (d) Decrease in antidiuretic hormone level

  5. In the figure given below, which blood vessel represents
    vena cava?


B

A

D RARV LALV C

(a) C (b) D (c) A (d) B


  1. Read the given statements and select the correct option.
    Statement A : Glomerular filtration does not require the
    expenditure of energy by kidney cell.
    Statement B : Afferent arterioles are narrower than the
    glomerular capillaries so, there is continuous process of
    glomerular filtration.
    (a) Both statements A and B are correct and B is the
    correct explanation of A.
    (b) Both statements A and B are correct but B is not the
    correct explanation of A.
    (c) Statement A is correct but statement B is incorrect.
    (d) Both statements A and B are incorrect.

  2. Read the following statements and select the incorrect ones.
    I. The glomerular filtration rate is the amount of filtrate
    formed by each kidney per day.
    II. The amount of blood pumped by heart per minute is
    called cardiac output.
    III. During joint diastole, the blood flows from ventricles
    into the aorta and pulmonary artery as semilunar
    valves open due to fall in pressure within the ventricles.
    I V. Capsular hydrostatic pressure is the pressure exerted
    against the filtration membrane by the filtrate in
    Bowman’s capsule during filtration.
    (a) I and III (b) II and IV
    (c) II, III and IV (d) All of these.

  3. Globulins contained in human blood plasma are primarily
    involved in
    (a) osmotic balance of body fluids
    (b) oxygen transport in the blood
    (c) clotting of blood
    (d) defence mechanisms of body.

  4. Select the group containing ammonotelic animals only.
    (a) Earthworm, frog, turtle, pigeon
    (b) Crocodile, earthworm, leech, bony fish
    (c) Cockroach, land snail, prawn, toad
    (d) Tapeworm, lizard, shark, leech

  5. Read the following statements.
    (i) First heart sound is caused by closure of semilunar
    valves.
    (ii) Heart sound ‘dup’ marks the end of ventricular systole.
    (iii) Heart beat is rhythmic contraction and relaxation in
    aorta and its main arteries.
    (iv) Vagus cranial nerve decreases the heart beat.
    Select the correct statements.
    (a) (i) and (iv) (b) (ii) and (iv)
    (c) (i), (ii) and (iii) (d) (iii) and (iv)

  6. During blood coagulation, X is released at the site of an
    injury. Identify X.
    (a) Prothrombinase (b) Prothrombin
    (c) Thromboplastin (d) Fibrinogen

  7. Read the following statements and choose the correct ones.
    (i) Atrial Natriuretic Factor stimulates the release of
    renin from JGA.

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