Question

write the salient features of algae ​

Answer 1

Answer:

The term Algae (L. alga- sea weed) is collectively used for all the Chlorophyll bearing non­vascular thalloid organisms.

Linnaeus (1754) first coined the term algae, which he placed along with Liverworts & lichen under class Cryptogamia of Conventional Plant-Kingdom.

But, in Whittaker’s classification, all members of algae are redistributed in three kingdoms i.e. Monera (Blue Green Algae), Protista (Diatoms, Dinoflagellates, Euglenoids) & Plantae (Greenlagae, Brown algae & Red algae).

Explanation:

Answer 2

1. Algae include a group of about of 30,000 species which are generally aquatic (both freshwater & marine).

2. All the members of algae are Chlorophyllus, non-vascular thallophytes.

3. They contain chlorophyll a, carotenes and xanthophylls. Additional pigments occur in specific groups.

4. Algae are autotrophic organisms and they have chlorophyll. They are O2 producing photosynthetic organisms that have evolved in and have exploited an aquatic environment. The study of Algae is known as Algology or phycology.

5.  Algae the plant body shows no differentiation into root, stem or leaf or true tissues. Such a plant body is called thallus. They do not have vascular tissues.

6. Algae are eukaryotic organisms that have no roots, stems, or leaves but do have chlorophyll and other pigments for carrying out photosynthesis. Algaecan be multicellular or unicellular. Unicellular algae occur most frequently in water, especially in plankton