Question 19N.3.SL.TZ0.12a
| Date | November 2019 | Marks available | [Maximum mark: 2] | Reference code | 19N.3.SL.TZ0.12a |
| Level | SL | Paper | 3 | Time zone | TZ0 |
| Command term | Outline | Question number | a | Adapted from | N/A |
The blackberry (Rubus fruticosus) is a plant that grows in deciduous woodlands in many parts of the world. A 30 m transect was laid out in a woodland to investigate the relationship between light intensity and blackberry growth. The percentage cover of blackberries and the light intensity were measured at 26 positions along this transect.
Outline how these results indicate that blackberry distribution is limited by light intensity.
[2]
a. as light level changes so does the percentage cover «of blackberry» ✔
b. distribution is higher at intermediate/moderate light intensities ✔ Accept appropriate numerical values
c. little growth at low light intensities
OR
little growth at high light intensities ✔ Accept appropriate numerical values
d. distribution is bell shaped ✔
