Photosynthesis is an essential process in all green plants: using chlorophyll and sunlight energy to convert carbon dioxide and water into glucose which is then stored in the leaves for the cells to use in respiration.
When investigating geotropism, the clinostat can be held horizontally, and the direction of growth can be observed.
These stomata or pores, connect directly to airspaces inside the leaves and regulate the movement (diffusion) of oxygen, carbon dioide and water vapour into and out of the plant.
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