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Question
Which among the following is a feature common in green, brown and red algae?
Which among the following is a feature common in green, brown and red algae?
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Solution
The correct option is D Vegetative reproduction
The common feature in all the algae is vegetative reproduction by fragmentation. Fragmentation is a method of asexual reproduction where one fragment from an organism's body is broken due to external physical causes. Each fragment then grows into different individuals. Such type of reproduction is commonly seen in filamentous algae like Ulothrix and Spirogyra.
Type of algae
Stored food Cell wall composition Pigments Green algae Starch
Cellulose
Chlorophyll a, chlorophyll b
Red algae
Floridean starch
Cellulose
Phycoerythrin, chlorophyll a and d Brown algae Mannitol, laminarin
Cellulose, algin
Fucoxanthin, chlorophyll a and c
The common feature in all the algae is vegetative reproduction by fragmentation. Fragmentation is a method of asexual reproduction where one fragment from an organism's body is broken due to external physical causes. Each fragment then grows into different individuals. Such type of reproduction is commonly seen in filamentous algae like Ulothrix and Spirogyra.
Type of algae | Stored food | Cell wall composition | Pigments |
| Green algae | Starch | Cellulose | Chlorophyll a, chlorophyll b |
| Red algae | Floridean starch | Cellulose | Phycoerythrin, chlorophyll a and d |
| Brown algae | Mannitol, laminarin | Cellulose, algin | Fucoxanthin, chlorophyll a and c |
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