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Transportation in Animals

Description: Transport in Animals and Plants Animal Anatomy
Number of Questions: 20
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Tags: Transport in Animals and Plants Animal Anatomy
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Which of the following regulates circulation of blood in the body?

  1. Arteries

  2. Veins

  3. Heart

  4. Lymph vessels

Show answer
Correct Option: C
Explanation:

Heart regulates circulation in body by pumping blood.

Which of the following form(s) the major component of blood plasma?

  1. Plasma protein

  2. Blood sugar

  3. Water

  4. Gases

Show answer
Correct Option: C
Explanation:

Water accounts for 92% of plasma.

Which of the following is correct shape of red blood corpuscles? (Why?)

  1. Biconcave

  2. Biconvex

  3. Elliptical

  4. Amoeboid

Show answer
Correct Option: A
Explanation:

RBC's have biconcave or disc shape.

Which of the following statement is NOT true for red blood corpuscles?

  1. They have life span of 120 days.

  2. They are produced by the blood vessels.

  3. Mature RBC has no nucleus.

  4. Their red colour is due to presence of haemoglobin.

Show answer
Correct Option: B
Explanation:

RBCs are produced by the bone marrow and have a lifespan of 120 days.

Which of the following components of blood are responsible for inactivating foreign bodies entering the blood?

  1. Erythrocytes

  2. Leucocytes

  3. Thrombocytes

  4. Plasma

Show answer
Correct Option: B
Explanation:

Leucocytes release antibodies, which inactivate foreign bodies entering the blood.

Which of the following statement is not true for white blood cells?

  1. They are larger than RBCs

  2. They have biconcave shape

  3. They have different shapes of nucleus

  4. Then life span varies from 13 hours to 12 days.

Show answer
Correct Option: B
Explanation:

WBCs do not have a definite shape and can change their contours like an amoeba.

Which process is responsible for transport of materials in unicellular organisms?

  1. Osmosis

  2. Diffusion

  3. Active transport

  4. Imbibition

Show answer
Correct Option: B
Explanation:

In unicellular organisms, transport is a matter of simple diffusion.

Which of the following reduce(s) loss of blood on injury?

  1. Antibodies

  2. Plasma

  3. Thrombocytes

  4. Haemoglobin

Show answer
Correct Option: C
Explanation:

Thrombocytes are responsible for clotting of blood, ensuring that we do not lose much blood when we are injured.

Which of the following function is not performed by circulatory system?

  1. Transport of digested food

  2. Oxygenation of blood

  3. Carrying waste products to excretory system

  4. Transport hormones to the site of action.

Show answer
Correct Option: B
Explanation:

Oxygenation of blood is carried out by lungs i.e. respiratory system.

Which of the following function is not performed by blood?

  1. Protection against infections.

  2. Regulation of water balance in tissues.

  3. Regulation of body temperature

  4. Regulation of enzyme synthesis.

Show answer
Correct Option: D
Explanation:

Blood does not play any role in enzyme synthesis. It is responsible for transport of enzymes only.

Which of the following is not true for thrombocytes?

  1. They are disc shaped blood cells

  2. They are larger than RBCs

  3. Their life span is of 3 - 7 days

  4. They are produced in bone marrow.

Show answer
Correct Option: B
Explanation:

Thrombocytes are minute in size and smaller than RBCs.

Which of the following vessels carry blood away from the heart?

  1. Veins

  2. Arteries

  3. Capillaries

  4. Lymphatic vessels

Show answer
Correct Option: B
Explanation:

Arteries carry blood away from the heart to body tissues.

Which of the following has blood flow under high pressure?

  1. Arteries

  2. Veins

  3. Capillaries

  4. Lymphatic vessels

Show answer
Correct Option: A
Explanation:

Arteries carry blood under high pressure. They are able to take this high pressure because their walls are thick and elastic.

Which of the following vessels have valves present in them?

  1. Arteries

  2. Veins

  3. Capillaries

  4. Lymph vessels

Show answer
Correct Option: B
Explanation:

Veins have valves to prevent back flow of blood.

Which of the following is NOT a normal constituent of plasma?

  1. Glycogen

  2. Urea

  3. Cholesterol

  4. Amino acids

Show answer
Correct Option: A
Explanation:

Glycogen is not present in plasma. It is storage form of glucose.

Which of the following statement is not true for heart?

  1. It is surrounded by pericardium containing fluid.

  2. It is made up of specialized muscles.

  3. The two lower chambers are called ventricles which pump blood away from heart.

  4. The two upper chambers are called atria which have thick walls.

Show answer
Correct Option: D
Explanation:

Atria have thin walls while ventricles have thick walls.

Which of the following allow differentiation of blood groups in humans?

  1. Red blood cells

  2. Platelets

  3. Antibodies

  4. Antigens

Show answer
Correct Option: D
Explanation:

Antigens are responsible for differentiation of blood groups.

Which of the following carry oxygenated blood?

(i) Right atrium (ii) Left ventricle (iii) Pulmonary artery (iv) Pulmonary veins

  1. (i) and (iii)

  2. (ii) and (iii)

  3. (ii) and (iv)

  4. (i) and (iv)

Show answer
Correct Option: C
Explanation:

Pulmonary veins carry oxygenated blood from lungs to left auricle from where it moves to left ventricles.

Which of the following antigens will be present in RBCs of individuals who can donate blood to everyone?

  1. A

  2. B

  3. A and B

  4. Nil

Show answer
Correct Option: D
Explanation:

Blood group O is universal donor as it does not consist of any antigen on the surface of RBCs.

Which of the following function is performed by pericardial fluid?

  1. Nourishment of heart muscles

  2. Protection of heart from shock

  3. Elimination of waste from heart

  4. Contraction of heart muscles

Show answer
Correct Option: B
Explanation:

Pericardial fluid acts as shock absorber and thus protects the heart.

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