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Plant science test -HL mark scheme

I Growth of plantlets for use as crop plants II Bulking up of stocks of new plant varieties III Conservation A I only B 1 and II only C I and III only D I, II and III I Cutting the shoot tips II Lighting the plants to increase the length of the day III Planting the seeds in a different season IV Darkening the greenhouse to decrease the length of the day A I only B 1 and II and IV only C II and IV only D All of them I...

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