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प्रश्न
What is the basis of classification of algae?
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उत्तर
Algae were categorised by Fritsch (1935) taking into account phylogeny, affinities, and the interactions between different forms. He divided the algae into groups primarily based on characteristics such as cell wall chemistry, reserve food material, flagellar number and location, pigment type, and plant body form. There are eleven classes of algae, but the three primary classes are Rhodophyceae, Phaeophyceae, and Chlorophyceae.
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संबंधित प्रश्न
Write a note on the economic importance of algae.
Explain briefly the following term with a suitable example:
Isogamy
Mark the correct one as:
Assertion: Algae are heterotrophic.
Reason: They do not have chlorophyll.
‘Grass of water’ refers to ______.
Phycoerythirini s a blue pigment.
Name the pigments found in algae.
In ______, the cell wall is made up of polysulphate esters.
Which of the following algae contains mannitol as reserve food material?
The main pigment in Phaeophyceae (Brown algae) is ______.
Holdfast, stipe and frond constitutes the plant body in case of ______.
Food is stored as Floridean starch in Rhodophyceae. Mannitol is the reserve food material of which group of algae?
In the members of Phaeophyceaе.
- Asexual reproduction occurs usually by biflagellate zoospores.
- Sexual reproduction is by oogamous method only.
- Stored food is in the form of carbohydrates which is either mannitol or laminarin.
- The major pigments found are chlorophyll a, c and carotenoids and xanthophyll.
- Vegetative cells have a cellulosic wall, usually covered on the outside by gelatinous coating of algin.
Choose the correct answer from the options given below:
