Advanced MCQs: Chapter 3 - Transportation

Which of the following correctly explains the need for a transport system in complex organisms?

• Diffusion alone is sufficient due to their small surface area.

• Diffusion is too slow due to the large volume of cells.

• Active transport eliminates the need for circulatory systems.

• Cells do not require a constant supply of nutrients.

In which part of the human circulatory system does oxygen-rich blood first enter after returning from the lungs?

• Right atrium

• Right ventricle

• Aorta

• Left atrium

Which of the following components of blood plays a role in transporting hormones and enzymes?

• Red blood cells

• White blood cells

• Blood plasma

• Platelets

Which structure in the human heart ensures that blood does not flow back from the pulmonary artery into the right ventricle?

• Tricuspid valve

• Semilunar valve

• Bicuspid valve

• Aortic valve

What will happen if Anti-A antibodies are present in a person’s blood plasma and A antigen is introduced via transfusion?

• Agglutination will occur, which may cause death

• Blood circulation will improve

• Antibodies will ignore the antigen

• The antigen will destroy red blood cells

Which feature of the capillary enables efficient diffusion of gases and nutrients?

• Valves to prevent backflow

• One-cell thick walls

• Thick muscular walls

• High pressure pulses

Which of the following blood vessels carries oxygenated blood?

• Pulmonary artery

• Superior vena cava

• Pulmonary vein

• Right ventricle

Why is the left ventricle thicker than the right ventricle?

• It pumps blood at a lower pressure.

• It pumps blood to the entire body.

• It receives blood from lungs.

• It stores deoxygenated blood.

Which of the following is NOT a function of human blood?

• Transport of nutrients

• Regulation of body temperature

• Production of oxygen

• Removal of waste products

What factor causes the opening of stomata during the day in plants?

• Loss of turgor pressure in guard cells

• Water entering the guard cells by osmosis

• Absence of carbon dioxide in leaves

• Darkness in the surroundings