Question

Write the characteristic features of classes cyanophyeae

Answer 1

The characteristic features of cyanophyeae

• Type of prokaryotic cells (similar to the bacteria)
• There is a form of unicellular (single-celled), there are colonies and there is also a form of filaments.
• Has the pigment chlorophyll, the pigment fikobilin karotinoid and consisting of phycocyanin (blue), and fikoeritin (red). Combined these pigments create a bluish green color.
• Chlorophyll is not contained within the chloroplasts, but scattered throughout the protoplasm.
• Characteristically autotrof because of chlorophyll.

• The body structure is simple, the cell walls contain pectin, hemicellulose and cellulose are sometimes in the form of mucus.

• At the edge of the plasma contained chlorophyll dye, Carotene and two kinds of water-soluble kromoprotein namely: phycocyanin fikoeritrin blue and red.

• In the middle of the cell there is a section which is colorless containing DNA and RNA.

Answer 2

Explanation:

It is a primitive group of algae, consists of 150 genera and about 2,500 species. In India, the division is represented by 98 genera and about 833 species. Members of the class Myxophyceae (Cyanophyceae) are commonly known as blue green algae. The name blue green algae is given because of the presence of a domi­nant pigment c-phycocyanin, the blue green pigment.

In addition, other pigments like chloro­phyll a (green), c-phycoerythrin (red), β-carotene and different xanthophylls are also present. The members of this class are the simplest living autotrophic prokaryotes.