TRANSPORTATION

The information below shows the function of a component of blood.

Defense our body against disease

• Red blood cell

• White blood cell

• Platelet

• Plasma

The process of carrying oxygen, nutrients and other useful substances from the external environment into the cells is through_________

• respiration

• transpiration

• photosynthesis

• diffusion

Simple organisms such as unicellular organisms _________ a specialised transport system

• do have

• do not have

The process of exchange of substances needed by cells and waste products between complex organisms and the external environment (via diffusion) occurs _______and _________.

• slowly, comprehensively

• rapidly, comprehensively

• slowly, not comprehensively

Through this X system, oxygen and nutrients can be carried to all the body cells in complex organisms and waste products can be eliminated from all the body cells to the external environment.

What is X system ?

• diffusion system

• specialised transport system

• complex system

• simple system

Stoma is a fine pore between a pair of cells known as________

• epithelial cell

• red blood cell

• guard cell

Transports deoxygenated blood back to the heart from the whole body except the lungs.

The function above refer to______

• Vein

• Capillary

• Artery

• Heart

Humans and other mammals have a ‘double’ blood circulatory system that is made up of the__________ and___________.

• Pulmonary circulatory system , systemic circulatory system

• Systemic circulatory system, blood circulatory system

• Pulmonary circulatory system, difussion system

The human heart has ________chambers.

• three

• four

• two

• five

The diagram shows longitudinal section of the human heart.

Right atrium has _____ muscular wall while right ventricle has _____ muscular wall.

• thin, thick

• thick, thin

• small, large

• thin, large