Question 1:
State the adaptations of the human respiratory structure.
Answer:
• The large number of alveoli provides a large surface area for gaseous diffusion.
• The inner lining of alveoli is always moist and enables respiratory gases dissolve in it
• The alveoli are covered with a dense network of blood capillary that speeds up the diffusion of respiratory gases.
• The alveolus wall is only one-cell thick, which eases gas diffusion
State the adaptations of the human respiratory structure.
Answer:
• The large number of alveoli provides a large surface area for gaseous diffusion.
• The inner lining of alveoli is always moist and enables respiratory gases dissolve in it
• The alveoli are covered with a dense network of blood capillary that speeds up the diffusion of respiratory gases.
• The alveolus wall is only one-cell thick, which eases gas diffusion
Question 2:
Explain how the frog skin is adapted for efficient exchange of gases.
Answer:
A frog’s skin is very thin, constantly moist and densely supplied with a network of blood capillaries.
Explain how the frog skin is adapted for efficient exchange of gases.
Answer:
A frog’s skin is very thin, constantly moist and densely supplied with a network of blood capillaries.
Question 3:
State the characteristics of tracheoles that help with gaseous exchange in insects.
Answer:
• The large number of tracheoles provides a large surface area for gaseous exchange.
• Each body cell in an insect is supplied with a tracheole.
• The walls of tracheoles are thin and constantly moist.
• The ends of tracheoles have permeable walls and contain fluids that enable respiratory gases to dissolve and diffuse in and out of the respiratory surfaces.
State the characteristics of tracheoles that help with gaseous exchange in insects.
Answer:
• The large number of tracheoles provides a large surface area for gaseous exchange.
• Each body cell in an insect is supplied with a tracheole.
• The walls of tracheoles are thin and constantly moist.
• The ends of tracheoles have permeable walls and contain fluids that enable respiratory gases to dissolve and diffuse in and out of the respiratory surfaces.
Question 4:
Predict what will happen to a fish if its gills are torn after being caught in a net.
Answer:
Damaged gills reduce the total surface area available for an efficient gaseous exchange. Thus the fish may die due to a lack of oxygen.
Predict what will happen to a fish if its gills are torn after being caught in a net.
Answer:
Damaged gills reduce the total surface area available for an efficient gaseous exchange. Thus the fish may die due to a lack of oxygen.