CBSE Questions for Class 7 Biology Transportation In Animals And Plants Quiz 5 - MCQExams.com

Which blood vessels allow gas exchange in the body?
  • Artery
  • Capillaries
  • Vein
  • None of the above
When a child is grown up, his/her heart will beat about______ times per minute.
  • 70
  • 120
  • 17
  • 30
The xylem forms a________ of channels that connects roots to the leaves.
  • discontinuous network
  • broken network
  • continuous network
  • Irregular network
Pulmonary circulation is______.
  • The blood flow from heart to the body cells and back to the heart.
  • The blood flow from heart to the lungs and back to the heart.
  • The blood flow from lungs to the heart and then to the body cells.
  • The blood flow from the body cells to the lungs and back to the heart.
The_______has thick muscular wall, small lumen and no valves.
  • Arteries
  • Veins
  • Capillaries
  • Trachae
The water evaporates through the stomata present on the surface of the leaves by the process of transpiration.
  • True
  • False
Hemoglobin is found in RBCs and carry oxygen and carbon dioxide.
  • True
  • False
Salts and urea are removed along with water as sweat.
  • True
  • False
Fill in the blank:
Blood is a liquid, which has cells of various kinds suspended in it and the fluid part of it is called ______________.
  • Red blood cells
  • White blood cells
  • Haemoglobin
  • Plasma
Terrestrial animals like birds, lizards, snakes excrete a semi-solid, white coloured compound called ____.
  • Uric acid
  • Urea
  • Urine
  • All of the above
One day Rahul was helping his mother in the kitchen. While peeling vegetables, his index finger got cut a bit and started bleeding. His mother immediately washed his hands with water and secured the cut with a band-aid. After one day, Rahul opened the band-aid. What might have been his observation?
  • The cut increased in size
  • The bleeding did not stop
  • The bleeding had stopped and a clot had formed
  • None of the above
Kidney failure can be controlled by_______.
  • Dialysis
  • Circulation
  • Natural filtration
  • Glomerular filteration
Excretion, in unicellular plants and animals, takes place through _________.
  • Diffusion
  • Osmosis
  • Both A and B
  • None of the above
What do the lungs do as a part of excretory system?
  • Dispose of carbon dioxide through exhalation
  • Dispose of smoke through exhalation
  • Dispose of ultraviolet rays through exhalation
  • Dispose of rays through exhalation
Which of the following functions are carried out by the blood?
  • It transports substances like digested food from the small intestine to the other parts of the body.
  • It carries oxygen from the lungs to the cells of the body.
  • It transports waste for removal from the body.
  • All of the above
Match the following:
 Kidneys(a) Air 
 Heart(b) Food
 Lungs(c) Blood 
 Stomach(d) Wastes
  • 1 - a, 2 - c, 3 - d, 4 - d
  • 1- d, 2 - c, 3 - a, 4 - b
  • 1 - c, 2 - d, 3 - b, 4 - a
  • 1 - d, 2 - c, 3 - b, 4 - a
  • Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
  • Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
  • Assertion is correct but Reason is incorrect
  • Both Assertion and Reason are incorrect
Choose the correct answer from the alternatives given.
Blood enters the heart because muscles of:
  • atria relax
  • ventricles relax
  • atria contract
  • ventricles contract
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