EVERYDAY SCIENCE

Detailed explanation-1: -Spirogyra, Oedogonium, Volvox and Ulothrix are examples of green algae. They contain chlorophyll and are mostly found in fresh water. Spirogyra, Oedogomium and Ulothrix are filamentous in shape whereas Volvox is a colonial algae which contain upto 50, 000 cells.

Detailed explanation-2: -Ulothrix, genus of filamentous green algae (family Ulotrichaceae) found in marine and fresh waters. Each cell contains a distinct nucleus, a central vacuole, and a large thin chloroplast with at least one pyrenoid.

Detailed explanation-3: -Named for their beautiful spiral chloroplasts, spirogyras are filamentous algae that consist of thin unbranched chains of cylindrical cells. They can form masses that float near the surface of streams and ponds, buoyed by oxygen bubbles released during photosynthesis.

Detailed explanation-4: -One way to distinguish green filamentous algae from a cyanobacterial bloom is to try the “stick test.” Grab a stick and attempt to lift the mass out of the water. If it stays on the stick when lifted out of water and appears as a bundle of green slimy threads of hair, it is most likely green filamentous algae.

Detailed explanation-5: -Ulothrix is a genus of non-branching filamentous green algae, generally found in fresh and marine water. Its cells are normally as broad as they are long, and they thrive in the low temperatures of spring and winter. They become attached to surfaces by a modified holdfast cell. Reproduction is normally vegetative.