If you are asked to classify the various algae into distinct groups, which of the following characters you should choose?

Explanation

(d): Algae are a group of chlorophyllous, non­ vascular plants with thallose plant body. Different algae show different pigments present in the cell like chlorophyll ­ a, b, xanthophylls, carotenes, etc. These pigments provide the base for classification of various groups of algae into different classes. Members of Chlorophyceae possess chlorophyll ­ a, b pigments, Bacillariophyceae contains diatomin pigment whereas that of Phaeophyceae has fucoxanthin, Rhodophyceae has r­phycocyaninand r­phycoerythrin and cyanophyceae has phycobilin pigment.