There are approximately 8.7 million species on earth and their variety is simply astonishing. Besides, no two individuals of any animal-form are exactly alike. Hence, there must be some arrangement to group them in orderly categories to study the animal world. The diversity or differences also signify that organisms are really not so different from … Read more
A virus is an infectious biological agent of small size. The name ‘Virus’ comes from the Latin word meaning ‘poison’ or ‘slimy liquid’. The size of the viruses ranges from 20-300 nm. The chemical composition of all true viruses is nucleic acid either DNA or RNA and protein. They cannot multiply and continue the … Read more
Bacteria (singular-bacterium) are the microscopic unicellular and prokaryotic organisms. It is also known as a microbe. The term bacteria were first coined by F.J. Cohn in 1854. Bacteria come from the Greek word manning rod. It was discovered by Antonie Von Leeuwenhoek in 1976. It has a plant like cell-wall and autotrophic mode of nutrition. … Read more
The word ‘vitamin’ (Latin, vita, life+ amine) is derived from the original word “vitamine”, coined by Casimir Funk in 1912. Vitamin is an organic compound which is found in the food in variable and minute quantity and must be supplied to the animal organism from the external sources. It is a vital nutrient for an … Read more
Goldfish (Carassius auratus) is the most popular and nice-looking ornamental fish among the aquarium enthusiasts. The popularity of goldfish is increasing day by day among the pet fish keepers due to its brilliant bright body coloration, many forms, awesome body shape, easy to care for etc. They have lots of personality like people, provide aesthetic … Read more
Algae are eukaryotic and photosynthetic aquatic organisms under the kingdom of Protista. Algae growth is a regular trouble in any fish tank. Many types of algae grow in the aquarium and deplete vital nutrients from the water and thus affect the growth of live plants and aquarium fishes. Growth of algae relies on light. If … Read more