Algae, which form motile colony, is
- Volvox
- Nostoc
- Spirogyra
- Chlamydomonas
The Correct Option is A
Solution and Explanation
The correct answer is option (A): Volvox
The algae that forms a motile colony is Volvox. Volvox is a type of green algae that consists of individual cells working together in a spherical colony. These cells are interconnected by thin strands of cytoplasm and can move as a coordinated unit through the use of flagella. This motility allows Volvox colonies to move in a coordinated manner in water bodies. The other options listed, Nostoc, Spirogyra, and Chlamydomonas, do not form motile colonies like Volvox does.
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Concepts Used:
Algae
An Algae is a term mentioning a group of photosynthetic eukaryotic organisms. It has chlorophyll and nucleus but no root, stem, leaves and many features like normal land plants. Algae is both unicellular (e.g. Euglenophyta) and multicellular (e.g. seaweeds). Algae do photosynthesis and help in oxygen production
Algae can live in various habitats like moist rocks, soils, water bodies (both freshwater and marine) and in some animals (e.g. Sloth). Unicellular Algae belong to the Protista Kingdom and Multicellular algae belong to the Plantae Kingdom, but formerly all algae are categorized under kingdom Plantae for their photosynthetic nature.
Also Read: Difference Between Algae and Fungi
