Explain why the rate of photosynthesis levels off at high light intensity.
From Paper 2, Higher
23 marks
In a potometer, the air bubble moved 5.4 cm in 15 minutes. The capillary tube has a radius of 0.5 mm. Calculate the rate of water uptake in mm³ per minute.
From Paper 2, Higher
34 marks
Describe an investigation into the effect of light on the growth of seedlings.
From Paper 2, Higher
153 marks
Explain three ways plants use the glucose produced by photosynthesis.
From Paper 2, Higher
163 marks
Explain how guard cells control water loss from a leaf.
From Paper 2, Higher
262 marks
The light intensity at 10 cm from a lamp is I. Calculate the relative light intensity at 20 cm.
From Paper 2, Higher
273 marks
Compare transport in xylem and phloem.
Score 0 / 22 · 0 of 7 marked
This paper is written by Plasmo in the style of the Edexcel GCSE Biology exam. It is not a past paper and is not produced or endorsed by the exam board.
Plant structures and their functions Exam Questions: Edexcel GCSE Biology | Plasmo