WJEC AS Biology Unit 2: Gas Exchange

Which of the following is a feature of exchange surfaces?

• High surface area
• Low surface area

Which of the following is a feature of exchange surfaces?

• They are thin
• They are thick

Which of the following is a feature of exchange surfaces?

• They are permeable
• They are impermeable

Which of the following is a feature of exchange surfaces?

• They are moist
• They are desiccated

Which of the following is a feature of exchange surfaces?

• They are ventilated
• They are unventilated

What lines the tracheae of insects?

• Chitin
• Cartilage
• Lignin
• Collagen

What does this graph show?

• Parallel flow in cartilaginous fish
• Counter current flow in bony fish

What does this graph show?

• Parallel flow in cartilaginous fish
• Counter current flow in bony fish

What is the principal exchange surface of larval amphibians?

• Skin
• Lungs
• Gills

What is the gas exchange surface of mammals?

• Alveoli
• Bronchioles
• Trachea
• Pleural fluid