TopMyGrade

Home·Daily Problem

Daily Problem·Monday, 18 May 2026Back to today

Photosynthesis equation and limiting factors (4 marks)

GCSE · Biology · Edexcel · CB6Plant structures and functions — photosynthesis, transpiration, plant hormones, nutrition

Question

Edexcel 1BI0 Paper 2

(a) Write the word equation for photosynthesis. (1 mark)

(b) A student measures the rate of photosynthesis in pondweed at different light intensities. At high light intensities, the rate stops increasing even when light increases further. Suggest two possible limiting factors at this point. (2 marks)

(c) Explain why temperature affects the rate of photosynthesis. (1 mark)

4 marks · take your time before peeking.

Sign up to try the next 30 problems

Save your streak, mark answers against the spec, and build a daily revision habit. Free during public beta — no card, no auto-renew.

Generated by TopMyGrade AI · cross-check official sources before relying on the mark-scheme phrasing.