DP Biology (last assessment 2024)

Test builder »

Question 19N.3.HL.TZ0.2b

Select a Test
Date November 2019 Marks available [Maximum mark: 1] Reference code 19N.3.HL.TZ0.2b
Level HL Paper 3 Time zone TZ0
Command term State Question number b Adapted from N/A
b.
[Maximum mark: 1]
19N.3.HL.TZ0.2b

A student designed an experiment to study the transpiration through the leaves of a tomato plant (Solanum lycopersicum). Measurements were taken in the initial conditions with five leaves on a tomato shoot and then again after each of the five leaves was removed.

[Source: R. C. Hodson and J. Acuff . 2006. Water transport in plants: anatomy and physiology in
Tested Studies for Laboratory Teaching, Volume 27 pp 163–183]

(b)

State the independent variable in this investigation.

[1]

Markscheme

number of leaves «removed» ✔

Syllabus sections