Algae are a group of autotrophic, photosynthetic and oxygen producing organisms, which are mostly found in aquatic habitat. They are present in both freshwater and marine water, but some forms are also found on moist soil, tree bark and other terrestrial places. They contain chlorophyll and prepare their own food by the process of photosynthesis. … Read more
Euglena is a unicellular microscopic organism belonging to the kingdom Protista. It is generally found in freshwater ponds, lakes, streams and water having organic matter. Some species are also found in brackish water, salt water and moist soil. Euglena shows both plant and animal characters. It has chloroplast with chlorophyll, so in presence of sunlight … Read more
Toxigenic algae are the microscopic algae which produce toxic substances. These may be some microalgae and cyanobacteria. They are found in freshwater, sea water and brackish water. Under suitable condition, these algae multiply very fast. Warm temperature, stagnant or slow moving water and excess nutrients help in their growth. This rapid growth is called harmful … Read more
Brown algae are the large group of mostly marine and multicellular algae. They are commonly called as brown seaweeds. They mostly grow in cold and shallow sea water, especially on rocky sea coast. They are known as Phaeophyceae. Their body is not differentiated into true root, stem and leaves. The plant body is called thallus. … Read more
Rhodophyta are commonly called red algae. It is one of the oldest and large group of eukaryotic algae. Most of them are marine forms. Few species are also found in freshwater. The red colour is due to phycobilins. The main pigment is phycoerythrin. This pigment absorbs blue and green light. These lights can go deep … Read more
Algal cultivation is the process of growing microalgae. These are very small photosynthetic organisms. They use light, water and carbon dioxide. Then they grow and multiply. During this process algal cells produce many useful substances. Protein, lipid and carbohydrate are produced. These are stored in the algal biomass. Microalgae can be grown in freshwater. They … Read more
Algae are economically very useful organisms. They are used in food, agriculture, medicine, industry and fuel production. They grow very fast. They can grow in sea water and waste water also. For this reason they are used as cheap biological material. Many algae are used as food. Spirulina and Chlorella are used as food supplement. … Read more
Algae are simple, mostly aquatic and photosynthetic organisms. They are different from land plants because true root, stem and leaves are absent. Vascular tissues are also absent. The plant body of algae is simple. It is not differentiated into different plant parts. This type of body is called thallus. Algae show great variation in size … Read more
Algae are simple, mostly aquatic and photosynthetic organisms. They contain chlorophyll and prepare their own food. During photosynthesis oxygen is released by them. The plant body of algae is simple. It is not divided into true root, stem and leaves. Flowers are also absent. Such simple body is called thallus. Algae show much variation in … Read more
Algae are simple, chlorophyll bearing and photosynthetic organisms. They may be microscopic unicellular forms or large multicellular seaweeds. Phytoplankton are small algal forms and kelp is large seaweed form. The plant body of algae is not differentiated into true root, stem and leaves. Vascular tissues are also absent. The body is simple and thalloid. This … Read more
