8.8.2b Respiratory Structures and Breathing Mechanisms in Humans and Animals (Objective Questions)

The diagram shows the respiratory system of an insect.
What are the parts labelled P, Q and R?

Which of the following is the adaptation of lungs of a frog for gaseous exchange?
I.          The inner wall of the lungs are folded
II.        There is a layer of moisture on the walls of the lungs
III.       A network of blood capillaries on the walls of the lungs
IV.       Numerous of small lungs to increase the total surface area

The diagram shows a model of the lungs.
What happen to R and T when the string is pulled downwards?

The diagram shows the respiratory system of an aquatic animal.

Which characteristic of adaptation is true about the structure X to enhance the gaseous exchange?
I.          Thin epithelial walls
II.        A network of blood capillaries around it
III.      The direction of water flows over the gill is opposite to the flow of the blood
IV.       They can retain a maximum volume of gas

In the respiratory system of a fish, where does gaseous exchange occur?