Human digestive system

Human Digestive System

Human Digestive System Human beings consist of a well-developed digestive system for nutrition. Human nutrition deals with the provision of essential nutrients in food that are necessary to support good health and life. As we all know, good nutrition is essential for physical and mental growth, so it is highly Read more…

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Dental formula in mammals

Dentition in Mammals – Types of teeth and dental formula

Dentition in Mammals Dentition means the arrangement of teeth in the upper and lower jaws on the premaxilla, maxilla, and dentary bones. Development of tooth: Teeth develop over the jaw bone where certain Malpighian cells start actively multiplying forming a mass of cells called dental lamina or enamel organ. A Read more…

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Migration in Birds: Adaptation, Reason, and Types of Migration

Migration in Birds: Adaptations, Reasons, and Types of Migration

Migration in Birds Migration in birds is a phenomenon in which birds travel from one place to another in search of favorable conditions and more resources for their survival. The migration also involves the journey to return to the original place. The migration in birds takes place during seasonal change Read more…

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Characters of Archaeopteryx

Characters of Archaeopteryx Archaeopteryx was a primitive bird consisting of feathers. It is a genus of bird-like- dinosaurs. Archaeopteryx was accepted by paleontologists as the oldest known bird (member of group Avialae). Archaeopteryx is considered a transitional fossil between dinosaurs and modern birds. Its German name is “Urogel”. Scientific position Read more…

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