Question 15
HMarram grass grows on sand dunes, where there is little fresh water and strong winds.
The Figure shows a cross-section through a marram grass leaf.
Figure
a.[4]
Explain how the features shown in the Figure reduce water loss from the leaf.
b.[2]
Marram grass leaves unroll in wet weather.
Explain the advantage of this to the plant.
c.[2]
A student counted 12 stomata in a circular field of view under a microscope. The diameter of the field of view was 0.4 mm.
Calculate the number of stomata per mm2\text{mm}^2mm2.
Use π=3.14\pi = 3.14π=3.14 and give your answer to the nearest whole number.
6.2 Transport in plants Questions
43 exam-style questions on Edexcel GCSE Biology 6.2 Transport in plants, covering 6.2.1 Root hair cell adaptations, 6.2.2 Structure of xylem and phloem, 6.2.3 Transpiration and stomata, 6.2.4 Translocation of sucrose, 6.2.5 Leaf structure for photosynthesis, 6.2.6 Environmental factors on water uptake, 6.2.7 Rate calculations for transpiration, and 6.2.8 Plant adaptations to extreme environments. Each one has a worked solution and a mark scheme showing where the marks go.