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Question 19M.1.HL.TZ2.40

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Date May 2019 Marks available [Maximum mark: 1] Reference code 19M.1.HL.TZ2.40
Level HL Paper 1 Time zone TZ2
Command term Determine Question number 40 Adapted from N/A
40.
[Maximum mark: 1]
19M.1.HL.TZ2.40

What could be used in a technique for measuring flow rates in phloem?

I. Potometers

II. Aphid stylets

III. 14CO2

A. I and II only

B. I and III only

C. II only

D. II and III only

 

[1]

Markscheme

D

Examiners report

This question had a high discrimination index.

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