Question

Which pigment is present in blue green algae?

Answer 1

Cyanobacteria, sometimes known as blue-green algae, are prokaryotic organisms that can produce their own food through photosynthesis. To harness light energy, photosynthesis necessitates the use of particular-coloured pigments. Photosynthesis is aided by pigments of various colours such as green, orange, red, and yellow found in cyanobacteria.
They are a specific type of photosynthetic bacteria that thrive in ponds and lakes with water that is lukewarm and high in nitrogen and phosphorus. These bacteria are mostly blue-green in hue, although they can also be green, reddish-purple, or brown.

Complete answer:
The green pigment ‘chlorophyll a' is found in blue-green algae and cyanobacteria. It also contains a lot of yellowish carotenoids and the blue pigment phycobilin. Phycoerythrin is also found in several species (red pigment).
Blue-green algae, often known as cyanobacteria, are photosynthetic prokaryotes that can transform light energy into chemical energy. They achieve this with the help of pigments including Chlorophyll a, Carotene, and Xanthophylls.
Chlorophyll a is a kind of chlorophyll that is employed in photosynthesis with oxygen. The violet-blue and orange-red spectrums of visible light absorb the most energy. In the electron transport chain, they serve as electron acceptors.
Carotenoids, which include carotenes and xanthophylls, are a type of pigment.
Carotenes are reddish-orange pigments, while xanthophylls are yellow pigments. Carotenoids also aid in the absorption of light for photosynthesis, as they may entrap photons and transform them into chemical energy via photosystems.

Note:
Flowers and fruits also contain xanthophylls and carotenoids, which give them colour.
Carotenoids are the pigments that give pumpkins, carrots, corn, tomatoes, and daffodils their distinctive reddish-orange and yellow hues. They are pigments that give the yellow and red colour to animal tissues and products.
Chlorophylls come in a variety of forms, with Chlorophyll a being a universal pigment found in all photosynthetic species.