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…
Migration in Birds: Adaptations, reasons, and types of migration Introduction: Migration in birds is a phenomenon in which birds travel from one place to another in search of favourable conditions and more resources for their survival. The migration also involves the journey to return to the original place. This post Read more…
Flight or Aerial Adaptation in Birds The birds have a unique ability to fly and for this, there are various adaptations are acquired. In birds, the most obvious adaptation to flight is the wing, but the flight is so energy-demanding, that’s why birds have evolved many other adaptations to improve Read more…
Sexual Reproduction in Flowering Plants The flower is the reproductive part of a plant. In papaya, the flower is unisexual and contains either stamen or pistil and it may be bisexual as in mustard, and hibiscus. Parts of flower – sepals, petals, stamens, and pistils. Calyx – consisting of sepals, Read more…
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…