What are the economic importance of bacteria?
Bacteria are economically important as these microorganisms are used by humans for many purposes. The beneficial uses of bacteria include the production of traditional foods such as fudge, yogurt, cheese, and vinegar. Microbes are also important in agriculture for the compost and fertilizer production.
When can algae be pathogenic give an example?
Several algae are pathogenic of other organisms. For example, cyanobacteria cause the black band disease that leads to the bleaching and death of coral symbionts of the algae. Many red algae are parasites on other, mostly related red algae. Colorless green algae of the genus Prototheca cause skin infections in humans.
Are any algae pathogenic?
Although algae are typically not pathogenic, some produce toxins. Harmful algal blooms, which occur when algae grow quickly and produce dense populations, can produce high concentrations of toxins that impair liver and nervous-system function in aquatic animals and humans.
What is the economic importance of algae PDF?
2. Algae as food: Algae species are used as food in several countries in several forms. Algae species have proteins, vitamins (A, B, C and E), lipids, and minerals. Laminaria species is the important edible seaweed in Japan and the food item ‘Kombu’ is prepared from it.
What is the economic importance of algae Class 11?
Its source is red algae. Algae are also used as liquid fertilizer which helps in the repairing level of nitrogen present in the soil. Medicines: Lots of red algae like Corallina are used to treat worm infections. Biological indicator: Water pollution is checked with the help of Algae like Euglena and Chlorella.
What are the pathogenic bacteria?
Pathogenic bacteria are bacteria that can cause disease. This article focuses on the bacteria that are pathogenic to humans. Most species of bacteria are harmless and are often beneficial but others can cause infectious diseases. The number of these pathogenic species in humans is estimated to be fewer than a hundred.
What is the ecological importance of bacteria?
Bacteria play important roles in the global ecosystem. The cycling of nutrients such as carbon, nitrogen, and sulfur is completed by their ceaseless labor. Organic carbon, in the form of dead and rotting organisms, would quickly deplete the carbon dioxide in the atmosphere if not for the activity of decomposers.
Why are there few pathogenic algae?
Why aren’t there large numbers of pathogenic algae? Nearly all algae are autotrophic, not needing organic sources of nutrients. Pathogens are typically chemoheterotrophs. obligate intracellular parasites = they cannot live outside a cellular host.
What is the economic importance of fungi and algae?
Fungi are used in agriculture to enhance the fertility of the soil. Algae are photosynthetic microorganisms that can synthesise their own food. They can serve us lot of purposes and are economically important. Algae are used as food as they are rich in carbohydrates, vitamins and few other inorganic substances.