Transportation in animals

2. The Cells that helps in clotting of blood are

• RBCs

• WBCs

• Platelets

• Plasma

3. More than 50 % of blood is composed of

• Plasma

• Erythrocytes

• Nephrons

• Platelets

4. Blood Vessels that carry oxygenated blood from lungs to heart

• Pulmonary veins

• Pulmonary arteries

• Arteries

• Veins

5. The blood from the heart is transported to all the parts of the body by

• RBCs

• Arteries

• Veins

• Pulmonary Veins

6. Arteries and Veins are joined by a network of

• Capillaries

• Valves

• neurocytes

• Plasma

7. A lot of water is lost by plants in the form of vapour through stomata during

• Condensation

• Transpiration

• Sublimation

• Evaporation

8. An adult human being normally passes about --------- of urine in 24 hours.

• 5L

• 3 to 4 L

• 1 to 1.8 L

• 0.8 to 1.5 L

9. The main excretory product in humans is

• Urea

• Uric acid

• water

• ammonia

10. Removal of waste products from the body is called

• Transpiration

• extraction

• excretion

• congestion

11. The human heart beats about ---------- times a minute in an adult person at rest

• 50- 60

• 70- 80

• 80- 90

• 90- 100