For self-assessment questions, with exercises and discussions, just click on the correct topic at Biology GCSE & IGCSE Question Bank. Powerpoints can be downloaded from the same sitehere. The s-cool revision sitelets you revise the topic, summarizes the topic & tests you on it. Skooolgives you a lesson, including progress questions, for each Biology topic but you’ll need sound on for it. GCSE Bitesizehas revision pages (that take you through the topic), a test and an activity.
For tutorials & tests on this topic from ‘skoool’ go here and scroll down to 49 onwards.
KS3 Bitesize foundation level – Green Plants as Organisms – a video covering Photosynthesis & Respiration, Plant Nutrition, structure & function of Roots and Reproduction & KS3 Bitesize higher level – Life Processes – a video covering the details of Photosynthesis, the Structure & Function of the Leaf and the details of Respiration.