Gas Exchange Structures (HSC SSCE Biology): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
How do gas molecules move during gas exchange?
How do gas molecules move during gas exchange?
High to low concentration by diffusion
Why do leaves have a large, flat shape?
Why do leaves have a large, flat shape?
Maximises surface area for gas exchange
Where are most stomata found on leaves?
Where are most stomata found on leaves?
On the undersurface (lower epidermis)
What unique feature do guard cells have?
What unique feature do guard cells have?
They contain chloroplasts
What happens when guard cells become turgid?
What happens when guard cells become turgid?
The stomatal pore opens
What is the primary factor controlling stomata?
What is the primary factor controlling stomata?
Light
How many alveoli are in human lungs?
How many alveoli are in human lungs?
Approximately 300 million
What is the percentage in exhaled air?
What is the percentage in exhaled air?
~4%
How much dissolved oxygen can fish extract?
How much dissolved oxygen can fish extract?
Up to 80%
What is unique about insect gas transport?
What is unique about insect gas transport?
Does not involve blood