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B4a-d B4 • Write definitions for the following keywords; Flaccid, Turgid, Plasmolysed, lysis, crenation • Stick the pictures next to them • • • • What is a natural ecosystem? Give an example What is an artificial ecosystem? Give an example • Write definitions for the following keywords: community, habitat, population, ecosystem, zonation • Draw a kite diagram, what does it tell you? • What ways are there to collect insects? • Explain the mark, capture, recapture technique • What assumptions have to be made? • Write the equation for photosynthesis. • Describe van helmont and priestley’s experiments • What is glucose used for in a plant? • How can the rate of photosynthesis be increased? • Label the leaf structure • How is the leaf adapted for efficient photosynthesis? • Describe diffusion • How can the rate be increased? • Describe osmosis • Explain the term partially permiable