GENERAL KNOWLEDGE

Detailed explanation-1: -Algae are defined as a group of predominantly aquatic, photosynthetic, and nucleus-bearing organisms that lack the true roots, stems, leaves, and specialized multicellular reproductive structures of plants.

Detailed explanation-2: -Algae is composed of   50% carbon, 10% nitrogen, and 2% phosphorus. Table 10.3 shows the composition of various algae looking at the percentages of protein, carbohydrates, lipids, and nucleic acid. Table 10.3: Composition of algae – protein, carbohydrates, lipids, and nucleic acid.

Detailed explanation-3: -They play a vital role in aquatic ecosystems by forming the energy base of the food web for all aquatic organisms. As autotrophic organisms, algae convert water and carbon dioxide to sugar through the process of photosynthesis.

Detailed explanation-4: -There are 3 classes of algae: Chlorophyceae, Rhodophyceae, Phaeophyceae.