Question

What is rhodophyceace​

Answer 1

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It is a large group of algae consisting of about 831 genera and over 5;250 species. They are commonly known as red algae due to the presence of a water soluble red pigment, r- phycoerythrin. The r-phycoerythrin is, however, present sufficiently and completely to mask the chlorophyll a, giving the characteristic red colouration. More than 98% members are marine and the rest grow in fresh water.

The fresh water members grow in stagnant water (e.g., Asterocystis, Compsopogon etc.) as well as in flowing water (e.g., Lamanea, Thorea, Batrachospermum etc.). The marine species have the ability to live at greater depth (even at 30-90 meters) than the other members of different classes. They also exhibit a high degree of para­sitism and epiphytism. The parasitic members show great reduction in their size and pigmenta­tion.

Answer 2

Answer:

Rhodophyceae (red algae) A class of marine algae, most of them red in colour, whose basic shape is filamentous or membranous. They tend to occur at greater depths than the green algae (Chlorophyta) and they are among the oldest groups of eukaryotic algae, known from the Cambrian upwards. Epiphyton (Cambrian to Devonian) formed mounds and Solenopora (Lower Cambrian to Cretaceous) formed nodular masses made up of close-packed tubes. The coralline red algae, e.g. Lithothamnion, are important rock builders,

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