If you are asked to classify the various algae into distinct groups, which of the following characters you should choose?
Correct answer: D. Types of pigments present in the cell
- A. Nature of stored food materials in the cell
- B. Structural organization of thallus
- C. Chemical composition of the cell wall
- D. Types of pigments present in the cell
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.
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About Kingdom Plantae
Plants are multicellular, photosynthetic eukaryotes with cellulose cell walls, chloroplasts and large vacuoles. Coverage includes alternation of generations, vascular and non-vascular plants, seedless and seed-producing groups, gymnosperms and angiosperms, and the distinction between monocot and dicot features.
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