Comparative Anatomy – Analogous and Homologous Structures

Comparative Anatomy Comparative anatomy refers to the study of the similarities and differences in the anatomy of two species. Generally, it involves comparing the body structures of two species as seen in evolutionary biology and phylogeny.Evolution, in a population, refers to a genetic modification occurring over a period of time. Consequently, the progeny appear different … Read more

Discover Important Difference Arteries and Veins

Difference between Arteries and Veins Arteries and Veins are two different types of blood vessels in the circulatory system and are mainly involved in circulating blood throughout the body. However, the two blood vessels are quite different from each other in terms of function. One of the major differences between arteries and veins is that … Read more

Ecosystem – Structure, Functions, Units and Types of Ecosystem

Ecosystem Ecosystem Definition “An ecosystem is defined as a community of lifeforms in concurrence with non-living components, interacting with each other.”   Ecosystem – Structure, Functions, Units and Types of Ecosystem What is an Ecosystem? An ecosystem is a structural and functional unit of ecology where the living organisms interact with each other and the … Read more

Accumulation of Variations During Reproduction – An Overview

Accumulation of Variation During Reproduction Accumulation of Variations During Reproduction – An Overview Before understanding variation in detail, it is important to understand and know a few key terms. Let us have a look at them. Heredity: It is the transmission of genes from parents to offspring. It goes through separation and then fusion during stages … Read more

Acoustic Neuroma – Symptoms, Causes, Diagnosis & its Treatments

Acoustic Neuroma Acoustic neuroma, also known as vestibular schwannoma, is a kind of rare, noncancerous and a slow-growing tumour that occurs on the main nerve – vestibular leading from the inner ear to the brain. The vestibular nerves are the eighth cranial nerves, which functions by transmits sound and equilibrium (balance) information from the inner ear to the brain. This … Read more

Advantages of Dams

Advantages of Dams Dams are said to be an important source of water supply and of high importance for various other reasons. They supply the water for various means including domestic use, irrigation purposes and also for industrial uses. Dams are also involved in hydroelectric power generation and in river navigation. The application of these dams … Read more

Types of Teeth – Types of Teeth in Humans, Diagram and Functions

Types of Teeth Teeth are hard structures found exclusively in all vertebrates. Granted, some invertebrates have analogous “teeth”, but they are quite different in their structure and functions. There are different types of teeth found in humans. Let us have a look at the types of teeth in humans and other organisms in detail. Human … Read more

Excretion in Animals – Modes of Excretion and Excretory Wastes

Modes of Excretion Organisms consume food for survival, growth, and repair. Most of the food is digested and utilized by the body for the production of energy; the rest is expelled from the body by the digestive system in the form of feces. This process is NOT called excretion, though; it is called egestion (also known as … Read more

Phylum Arthropoda – Characterstics & Classification of Arthropoda

Arthropoda Arthropoda is the largest phylum with about nine lakh species. They may be aquatic, terrestrial, or even parasitic. They have jointed appendages and a chitinous exoskeleton. This phylum includes several large classes and contains the class Insecta which itself represents a major portion of the animal species in the world. They possess the ability … Read more