Friday, April 6, 2012

Photosynthetic pigments



Why plant look green?
Chloroplast in plant captured photon from sunlight and reflected on green pigments.

There are two types of pigments in plant:

Main pigment:
Chlorophyll a (blue green)
Absorb _________ and _______ light
Reflect green light
Characteristic:green

Accessory pigments
_____________ (yellow green)
Absorb violet, blue and red light

Carotenoids: carotene (yellow & orange)
Absorbs violet-blue & blue green light
Reflect _______ & ______ light
Characteristics:yellow.orange.red & brown




4 main types of pigments extracted from leaves using chromatography technique

Answer:
1. Chlorophyll b
2. Violet 
3. Yellow
4. Orange
5. Green





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