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Question 19N.3.HL.TZ0.2a.i

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

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]

(a.i)

Describe the trend in the data.

[1]

Markscheme

negative correlation between the number of leaves removed and transpiration rate Do not accept type of correlation alone, as a description is required.
OR
as more leaves are removed the transpiration rate drops ✔ OWTTE

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