Diversity in colour Observe the biodiversity garden in your school. Can’t you see flowers and leaves in different colours? You have seen that the reason for the green colour is chlorophyll, haven’t you? What are the pigments that cause other colours? Look at the table and find out. Table 1.5 Gaseous exchange in plants Did you understand that carbon dioxide is the gas used for photosynthesis? Which of these gases are used by living organisms for respiration? ğജൻ Is there only carbon dioxide in the atmosphere? Look at the illustration showing the amount of gases in the atmosphere. Nitrogen ഓക് സിജൻ Others Argon Oxygen Carbon dioxide Illustration 1.9 Living things breathe to get energy.
Don’t you think that plants also need energy? Basic Science V 20 Colour Pigment Red Anthocyanin Orange Carotene Yellow Xanthophyll