F3 2.4 adaptation in respiratory

Which one is not features to ensure an efficient gaseous exchange with the surroundings?

• Moist surface of respiratory structures

• Thin respiratory structures such as the walls of blood capillaries

• Dry outer skin causes the respiratory gases to dissolve and diffuse easily

• Large surface area of respiratory structures

Name the respiratory structure in fish.

• Lungs

• Gills

• Moist outer skin

• Trachea

Name the respiratory structure in insects.

• Lungs

• Gills

• Moist outer skin

• Trachea

Name the respiratory structure in frog.

• Trachea

• Gills

• Moist outer skin

Gills are made up of two rows of fine filaments that have many thin and flat projections known as .........................

• trachea

• lamellae

• spiracles

• valves

The number of filaments and lamellae in fish produce a large surface area to facilitate .......................

• water diffusion

• blood circulation

• energetic activities

• gaseous exchange

Name one respiratory structure of an amphibians which can adapt for gaseous exchange while they are on land.

• Lungs

• Gills

• Moist outer skin

• Trachea

The respiratory system of insects is made up of ..................... known as .......................

• fillaments , lamellae

• air tubes , trachea

• alveoli , alveolus

What is structure X ?

• Valves

• Tracheoles

• Spiracles

• Air sacs

When we exercise, our rate of respiration

increases. Higher rate of transport of

.................... to body cells and higher rate of

elimination of ....................... from body

cells result in healthier body cells.

• oxygen , carbon monoxide

• oxyhaemoglobin , carbon monoxide

• carbon dioxide , oxygen

• oxygen , carbon dioxide