Chapter 12: Human Transport System - Science For Grade 7(Science ) Questions and Answers

Question 1. The heart is also called
  1.    muscular pump
  2.    pumping device
  3.    pumping machine
  4.    pumping muscle
Explanation:-
Answer: Option A. -> muscular pump
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 2. The walls of left ventricle are thicker than the walls of right ventricle because
  1.    it has to pump blood to the whole body
  2.    it has to pump the blood to lungs
  3.    blood reaches this ventricle in huge amount
  4.    blood reaches this ventricle with extra pressure
Explanation:-
Answer: Option A. -> it has to pump blood to the whole body
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3. The clot of blood formed in the blood vessel is known as
  1.    hemophilia
  2.    anemia
  3.    thrombosis
  4.    varicose vein
Explanation:-
Answer: Option C. -> thrombosis
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 4. The vessel which takes the blood from heart to lungs, is known as
  1.    renal artery
  2.    pulmonary artery
  3.    renal vein
  4.    pulmonary vein
Explanation:-
Answer: Option B. -> pulmonary artery
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 5. Tiny vessels link up and form a
  1.    artery
  2.    vein
  3.    capillary
  4.    nerve
Explanation:-
Answer: Option B. -> vein
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 6. The elasticity of red blood cells helps them to
  1.    pass through capillaries easily
  2.    absorb oxygen easily
  3.    release carbon dioxide easily
  4.    move in the veins easily
Explanation:-
Answer: Option A. -> pass through capillaries easily
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 7. 'Oxygen' is taken from
  1.    cells to lungs
  2.    heart to lungs
  3.    lungs to cells
  4.    cells to heart
Explanation:-
Answer: Option C. -> lungs to cells
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 8. The cells generally known "the army of human body" are
  1.    white blood cells
  2.    platelets
  3.    red blood cells
  4.    antigens
Explanation:-
Answer: Option A. -> white blood cells
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 9. The artery that carries deoxygenated blood is
  1.    renal artery
  2.    hepatic artery
  3.    mesenteric artery
  4.    pulmonary artery
Explanation:-
Answer: Option D. -> pulmonary artery
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 10. The beating of pulse is due to
  1.    energy
  2.    flow of blood
  3.    flow of water
  4.    oxygen
Explanation:-
Answer: Option B. -> flow of blood
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
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