Organisms reproducing throughout the year are called _______ breeders e.g., ______ , and those who show recurring sexual activity are called _______ breeders e.g., _______ .

If the animal which can walk are called ' swimmers' , animals who crawl are called 'flying' , those living in water are called ' snakes' and those which fly in the sky are called 'hunters' , then what will a ' lizard' be called ? (a) Swimmers (b) Snakes (C) Flying (d) Hunters (e) None of these

Separation of groups of related organisms by physical barriers (e.g. seas, mountain , desert , river etc) is called ____ isolation while failure of two species to interbreed because they breed at different times (seasons) of the year is called ___ isolation .

All organisms have a to reach a certain stage of growth and maturity in their life, before they can reproduce sexually. That period of growth is called the

All organisms have to reach a certain stage of growth and maturity in their life, before they can reproduce sexually. That period of growth is called the

All organisms have a to reach a certain stage of growth and maturity in their life, before they can reproduce sexually. That period of growth is called the

The animals which possess backbone are called P, e.g., Q and R. Here P, Q, and R are respectively

Some cells in adult animals do not divide. They exit no G_1 phase and enter in an in active stage called