Igcse Model Questions Vol1 2025 Biology Question 1
Practice objective / multiple choice question 1 from the 2025 Igcse Model Questions Vol1 Biology examination.
A plant leaf loses water by transpiration at a rate of \(5\) mL per hour. The total cross‑sectional area of all xylem vessels in the leaf is \(0.2\) mm\(^2\), but only \(80\%\) of this area is functional for water transport. Assuming water moves as a continuous stream, calculate the average velocity of water in the functional xylem (in mm s\(^{-1}\)), giving your answer to two decimal places.
Answer Options
About This Question
This is Igcse Model Questions Vol1 2025 Biology Question 1. It is one of the objective questions from the 2025 Igcse Model Questions Vol1 Biology examination.
Difficulty level: Medium .
Master the Exam!
You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.