Sec 2 Transport Systems in Living Things Quiz 2023

The transport system in humans is made up of three main components. Select the three.

• heart

• lungs

• blood vessels

• blood

Answer explanation

The lungs are part of the respiratory system!

Which of the following does NOT describe the red blood cell?

• It contains haemoglobin that binds to oxygen.

• It transports oxygen to different parts of the body.

• It serves a protective function for our body.

• Lack of it may lead to dizziness and tiredness.

Answer explanation

The white blood cells serves a protective function -- helps us fight against infections by producing antibodies.

Which blood vessel generally carries blood away from the heart?

• artery

• vein

• capillary

• heart

Answer explanation

You can remember it like this: Arteries carry blood Away from the heart!

Which blood vessel generally carries blood back to the heart?

• artery

• vein

• capillary

• heart

Answer explanation

You can remember it like this: Veins carry blood INto the heart!

Why do capillaries have very thin walls?

Answer explanation

Capillaries have very thin walls to allow the exchange of substances such as oxygen and carbon dioxide to occur.

Which of the following are tissues (groups of cells) that make up the plant transport system?

• stem

• leaves

• xylem

• phloem

Which tissue transports water and mineral salts from the roots to the leaves for photosynthesis?

• xylem

• phloem

• stem

• roots

Gases diffuse out of plant cells and out of leaves through these tiny openings into the air.

The name of the process by which oxygen and carbon dioxide move into and out of the leaf.

The name of the process describes the movement of water molecules through a partially permeable membrane.