Respiratory System

Living things on land and in water take in oxygen from their surroundings to stays alive.

• True

• False

Air is a mixture of different gases.

The components of air are oxygen, nitrogen, carbon dioxide, water vapour and other gases

• True

• False

When the air we breathe in reaches the air sacs in our lungs, carbon dioxide enters our blood.

• True

• False

Tags

NGSS.HS-LS2-5

The human

respiratory system consists of the nose, windpipe and the heart.

• True

• False

Fish take in dissolved oxygen in that water that passes through the the gills.

• True

• False

Insects have lungs and they breathe through nostrils.

• True

• False

Plants help to maintain the balance of oxygen and carbon dioxide in the air.

• True

• False

Tags

NGSS.HS-LS2-5

Plants can produce oxygen and take in carbon dioxide when it makes food.

• True

• False

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

When we run, the muscles in our body need less oxygen than when we walk.

• True

• False

The respiratory system works together with the circulatory system to ensure all parts of our body receive enough oxygen.

• True

• False