adaptations activity

Activation of Adaptive Immunity - Antigens are processed by antigen presenting cells like macrophages. The processed antigen is presented on the surface of these cells. A group of T-cells called T helper cells specifically interacts with the presented antigen and becomes ac..

Antigens are processed by antigen presenting cells like macrophages. The processed antigen is presented on the surface of these cells. A group of T-cells called T helper cells specifically interacts with the presented antigen and becomes activated..

>For example, in the course of human evolution, forelimbs have become free from the task of locomotion and have opposable digits. This adaptive feature has enabled man to use his forelimbs for various activities like holding, examining or throwing an object, making and using of ..

Adaptations for flight are called as volant adaptations. Bats, birds and insects are well adapted for an active fligh..

This is an immunity developed by an animal in response to a disease caused by infection of pathogens. It is very specific and prevents further attacks. It lasts for the whole life of the organism in certain cases and for a few years in others. Acquired immunity is further of two types - natural or ..

Some organisms have become secondarily adapted for aerial existence. Organisms that are capable to do their activities in the aerial environment are called as aerial or arboreal organisms. Examples: Insects, bats and bird..

Aerial Habitat - Some organisms have become secondarily adapted for aerial existence. Organisms that are capable to do their activities in the aerial environment are called as aerial or arboreal organisms. Examples: Insects, bats and bird..

The habitat and adaptation have a very strong relationship and a perfect balance must be maintained for the survival of the organism. Due to natural calamities and human activities the habitat often gets altered. These alterations may be permanent or temporar..

Animals are different from plants because of their ability of locomotion. This ability probably developed as they have to search for food, unlike the plants that are autotrophic. Since they move from place to place, the animals have to continuously encounter changes in their environment. All animal..

It is known as Adaptive or Specific immunity. Non-specific immunity is not specifically directed against a particular microbe. Specific immunity involves the production of a specific type of cell or specific molecule (antibody) to destroy a particular antigen. It is capable of recognising..