Mass Transport in Plants (AQA A-Level Biology): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
From which part of the plant root do root hair cells project?
From which part of the plant root do root hair cells project?
Epidermis
Why can root hair cells increase surface area without extra cellular machinery?
Why can root hair cells increase surface area without extra cellular machinery?
The hair is an extension of the cell
By what process do root hair cells absorb water from the soil?
By what process do root hair cells absorb water from the soil?
Osmosis
How do root hair cells absorb mineral ions when soil concentration is lower than inside the root?
How do root hair cells absorb mineral ions when soil concentration is lower than inside the root?
Active transport
What happens to the living contents of xylem vessels as they mature?
What happens to the living contents of xylem vessels as they mature?
They break down and disappear
What substance impregnates xylem vessel walls to provide strength and waterproofing?
What substance impregnates xylem vessel walls to provide strength and waterproofing?
Lignin
What structural feature prevents xylem vessels from collapsing under negative pressure?
What structural feature prevents xylem vessels from collapsing under negative pressure?
Lignified walls
What advantage does spiral thickening of lignin offer compared to continuous thickening?
What advantage does spiral thickening of lignin offer compared to continuous thickening?
Allows flexibility as plant grows
Why is it advantageous that xylem vessels are composed of dead cells?
Why is it advantageous that xylem vessels are composed of dead cells?
Creates unobstructed pathway for water
What role do root hair cells play in the plant's transport system?
What role do root hair cells play in the plant's transport system?
Entry point for water and minerals