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15 Topic Pages Found in Biology and starting with the letter K
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borecole bôr'kōl , and collards, common names for nonheading, hardy types of cabbage (var. acephala and sometimes others), with thick stems and curly

Open Kangaroo

name for a variety of hopping marsupials , or pouched mammals, of the family Macropodidae, found in Australia, Tasmania, and New Guinea. The term is

Open kangaroo rat
kangaroo rat

small, jumping desert rodent, genus Dipodomys, related to the pocket mouse . There are about 20 kangaroo rat species, found throughout the arid

Open kidney

In vertebrates, one of a pair of organs responsible for fluid regulation, excretion of waste products, and maintaining the ionic composition of the

Open Killer whale
Killer whale

orca, or grampus, a large, rapacious marine mammal of the dolphin family. Historically considered one species, Orcinus orca, killer whales may be


any of more than a thousand species of small fish of the several families of the order Cyprinodontiformes (toothed minnows or toothed carps), a group

Kinetic theory

Theory describing the physical properties of matter in terms of the behaviour – principally movement – of its component atoms or molecules. It states

King cobra

name for African and Asian snakes of the family Elapidae that are equipped with inflatable neck hoods. The family also includes the African mambas ,


Abstract The kinorhynchs (mud dragons) are a small phylum of microscopic, free-living, segmented acoelomate or pseudocoelomate invertebrates belonging

Open Kiwifruit

The kiwifruit ( Actinidia chinensis ) was a small, hard berry growing wild in China at the beginning of the twentieth century. It was subsequently