Which of the following substance transports oxygen?

• Haemolymph

• Haemoglobin

• Fibrinogen

• Plasma

The diagram shows the longitudinal section of a vein.

What is the role of X?

• Decrease the size of the lumen of the vein

• Prevent the back flow of blood

• Increase the blood pressure in the vein

• Speed up the flow of blood in the vein

Which of the arteries carries blood with the lowest oxygen concentration?

• Renal artery

• Hepatic artery

• Mesentric artery

• Pulmonary artery

Which of the following description is true about blood cells?

• Erythrocytes-

  Biconcave in shape to enable the change of shape while passing the blood capillary

• Platelet-

  Without nucleus and involved in the blood clotting mechanism

• Monocytes-

  Produced in the bone marrow and produce antibodies to destroy pathogens

• Neutrophils-

  Description

  Without granules and destroy pathogens by phagocytosis

Which types of leucocytes are capable of carrying out phagocytosis?

I Basophils

II Eosinophils

III Neutrophils

IV Monocytes

• I and II only

• III and IV only

• I, II and IV only

• II, III and IV only

What is the function of septum in a heart?

• To ensure that blood flows smoothly form one chamber of the heart to another

• To separate oxygenated blood from deoxygenated blood

• To ensure that the heart is divided into two sides

• To strengthen the structure of the heart

The following statement are the characteristics of blood transported by the blood vessel in the human body.

What is the blood vessel?

• Aorta

• Vena cava

• Pulmonary artery

• Pulmonary vein

The diagram shows a cross-section of the human heart.

Which part A, B, C or D pumps the blood into the pulmonary artery?

• A

• B

• C

• D

The diagram shows a longitudinal section of the human heart.

Which of the labeled parts, A, B, C or D, pumps blood to the lung?

• A

• B

• C

• D

The diagram shows an open circulatory system of an arthropod. What is the colourless fluid found in it?

• Lymph fluid

• Plasma

• Haemolymph

• Interstitial fluid