A. Choose the correct option.

1. Which component of blood helps in clotting?

a. RBCs. b. Platelets. C. WBCS. d. Plasma.

2. Blood from the lungs enters the left atrium of the heart through

a. pulmonary artery. b. aorta. c. pulmonary vein. d. capillaries.

3. The conducting tissue that transports food in the plants is

a. xylem. b. stomata. c. phloem. d. leaf

4. The phenomenon by which plants lose water from their leaves is called

a. transportation. b. transpiration. c. translocation. d. ascent of sap

5. An animal X was found in the desert. What could be the main excretory product produced by that animald.

a. Ammonia b. Urea c. Uric acid. d. All the above ​