Q.1: The fluid part of the blood is called ___________.
Q.2: ____________ carry oxygen rich blood from the heart to all parts of the body.
Q.3: The presence of ______________ makes the blood appear red.
Q.4: The _____________ fight against germs that enter our body.
a) Red Blood Cells
b) White Blood Cells
Q.5: The pulse rate of a resting person is usually ______ beats per minute.
Q.6: Nikunj wounded himself while playing. The blood came out of the wound and clotted after some time. The ability of blood to clot is because of the presence of ___________ in the blood.
Q.7: __________ have thin walls.
Q.8: Your heart is roughly the size of your __________.
Q.9: The rhythmic contraction and relaxation of heart muscles constitute _________.
a) heart beat
c) breathing rate
Q.10: The upper two chambers of the heart are known as ____________.
Q.11: The __________ is the main artery that carries the blood away from heart to the other body parts.
a) Pulmonary vein
b) Pulmonary artery
Q.12: The English physician, ____________, discovered the circulation of blood.
a) Robert Harvey
b) William Harvey
c) John Harvey
Q.13: The kidneys, ureter, bladder and urethra form the ____________ system.
Q.14: Aquatic animals excrete cell waste in gaseous form _______________, which gets dissolved in water.
Q.15: When a person’s kidney fails, he has to get his blood filtered periodically through an artificial kidney. This process is known as _____________.
Q.16: The ______________ increase the surface area of the root for the absorption of water and mineral nutrients dissolved in water.
a) root cells
b) stem cells
c) root hairs
Q.17: The vascular tissue for the transport of water and nutrients in the plant is known as _____________.
Q.18: _________ and ________ are removed along with water as sweat.
a) urea and ammonia
b) salts and urea
b) salts and hormones