Question

'Green felt' alga is

Answer 1

Algae (not just one alga, but several algae) are plant-like living things that can produce food from sunlight through photosynthesis. Algae can be unicellular or multicellular.

Complete answer:
Algae can be found in a variety of environments, including oceans, rivers, and lakes, as well as ponds, brackish water, and even snow. Algae are typically green, but they can also be found in a variety of other colors. Algae living in snow, for example, contain carotenoid pigments in addition to chlorophyll, giving the surrounding snow a distinct red hue.

Algae with multiple cells include giant kelp and brown algae. Diatoms, Euglenophyta, and Dinoflagellates are examples of unicellular organisms. Because most algae require a moist or watery environment, they are common near or inside bodies of water. They are anatomically similar to another major group of photosynthetic organisms – land plants.

However, the similarities end there because algae lack many structural components found in plants, such as true stems, shoots, and leaves. Furthermore, they lack vascular tissues that allow essential nutrients and water to circulate throughout their bodies.

Vaucheria, also known as Green Felt, is a large, dense, dark-green felted mass of coarse, tubular, branching filaments. It spreads over the mud in shallow ditches and moist soil near springs, or it floats on the surface of ponds and quiet freshwater.

'Green felt' alga is Vaucheria.

Note: Algae can now be used as a fuel source thanks to recent advances in science and technology. Global demand for petroleum products, combined with deteriorating environmental health, has prompted the use of environmentally friendly alternatives such as algal biofuel. As a result, algae fuel is becoming a more viable alternative to traditional fossil fuels. It's used to make everything from "green" diesel to "green" jet fuel. It is similar to the other biofuels made from corn and sugarcane.