Gas exchange multiple choice
Quiz
Which of these is NOT a feature of a specialised gas exchange surface?
- Large surface area
- Very thick to provide long diffusion distance
- Selectively permeable
- A transport system to maintain diffusion gradient
Which shows the correct path taken by oxygen to reach muscle tissues in an insect?
- trachea, tracheole, spiracle, muscle
- trachea, spiracle, tracheole, muscle
- spiracle, trachea, tracheole, muscle
- spiracle, tracheole, trachea, muscle
What happens to the water in the end of the tracheoles of an insect during periods of high activity?
- It moves from the tracheole into the cells by osmosis - decreasing volume of water
- It moves from the cells into the tracheoles by osmosis - increasing volume of water
- It evaporates from the spiracles
- It moves back into the trachea due to muscle contractions
Which of these is NOT an adaptation to reduce water loss in insects?
- Small surface area to volume ratio
- Exoskeleton made from chitin
- Spiracles which can be closed
- One spiracle found on each body segment
Which structures increase the surface area of gill filaments in fish?
- gill bar
- lamellae
- microvilli
- alveoli
How is the diffusion gradient maintained across the entire width of the gill lamella?
- parallel flow
- concurrent flow
- countercurrent flow
- two-way flow
Which of the following is NOT an adaptation of a leaf for gas exchange?
- large surface area of mesophyll cells
- interconnecting air spaces in mesophyll
- many stomata
- thick waxy cuticle
What are xerophytes?
- Plants adapted to living in areas where water is in short supply
- Plants adapted to living in areas where there is a lot of water
- Plants adapted to living in soil with a high salt concentration
- Plants adapted to living in areas where there is limited sunlight
How is the mammalian trachea supported?
- By rings of cartilage
- By the ribs
- By the pressure of air entering it
- By the intercostal muscles
How do the cells lining the bronchus prevent dirt particles from reaching the alveoli?
- Good blood supply
- Rings of cartilage
- Mucus and cilia
- Collagen and elastic fibres
Which muscles contract to bring about inspiration?
- Diaphragm
- External intercostals
- Internal intercostals
- Pulmonary
How many alveoli are there in each human lung? (approximately)
- 3 million
- 30 million
- 300 million
- 3 billion