Question

chlorophyll structure​

Answer 1

When we take one molecule of chlorophyll and find its structure we will see that it somehow looks like kite or tadpole which has head and tail .

Chlorophyll a :

1. Formula => C55 H72 O5 N4 Mg .
2. Chlorophyll a is of methane group .
3. There blue- green in colour .
4. They usually absorb red colour more than violet - blue .

Chlorophyll b :

1. Formula used => C55 O70 O6 N4 Mg
2. They abzorb violet blue colour more then red .

Carotenoids :

1. They are yellow , brown and reddish pigment .
2. Carotenoids and chlorophyll b are accessory pigments of chlorophyll .
3. They are of two types :-

• Carotenes ( Orange to red )
• xanthophyll (yellow)

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Some important points to remember :-

• Autumn leaves colour is due to Lutein .
• Brown algae colour is due to fucoxanthin .

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