respiratory system

How do adult amphibians such as frogs breathe?

How do fish breathe?

How do plants take in and give out air?

What happens to the diaphragm during inhalation and exhalation of air?

Study the experimental set-up below. After a few hours some water droplets formed on the inner surface of the plastic bag. What can be concluded from the above experiment?

State the percentage of the following gases in air. Carbon dioxide, Nitrogen, Oxygen, Water vapour and other gases

How do plants carry out gaseous exchange with the surroundings?

• Through air sacs

• Through stomata

• Through breathing holes

• Through tiny openings found on roots

Which of the following animals does not breathe through lungs?

• Dolphin

• Bird

• Bee

• Turtle

Which of the following groups of animals can have more than one organ?

• Fish

• Reptiles

• Mammals

• Amphibians