Which statement about xylem is correct?, It transports food from leaves to roots.It transports food from leaves to roots.It transports food from leaves to roots.It transports food from leaves to roots., It transports water and minerals from roots to other parts., It carries oxygen in plants., It stores extra food in stems., Which blood vessel has thick muscular walls to withstand high pressure?, Vein, Capillary, Artery, Lymph vessel, Transpiration mainly helps the plant in:, Making food in leaves, Cooling the plant and pulling water upwardLungs, Absorbing minerals from soil, Releasing carbon dioxide, The exchange of materials between blood and body cells takes place through:, Arteries, Veins, Capillaries, Aorta, Why do veins have valves?, To increase blood pressure, To purify blood, To absorb oxygen, To prevent backflow of blood, Which component of blood helps in fighting infections?, Red blood cells, White blood cells, Platelets, Plasma, Which of the following is NOT a function of the kidneys?, Filtering waste from blood, Regulating water balance, Producing digestive enzymes, Forming urine, In humans, oxygenated blood from the lungs enters the:, Right atrium, Right ventricle, Left atrium, Left ventricle.

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