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28 Topic Pages Found in Biology and starting with the letter W
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Open Wallace, Alfred Russel, 1823-1913
Wallace, Alfred Russel, 1823-1913

Alfred Russel Wallace (1823-1913), British naturalist, evolutionist, geographer, anthropologist, and reformer, was a central figure in the emergence

Open Walnut
Walnut

common name for some members of the Juglandaceae, a family of chiefly deciduous, resinous trees characterized by large and aromatic compound leaves.

Open Walrus
Walrus

marine mammal, Odobenus rosmarus, found in Arctic seas. Largest of the fin-footed mammals, or pinnipeds (see seal ), the walrus is also distinguished

Open Warthog
Warthog

Large-headed species ( Phacochoerus aethiopicus ) of pig ( ungulate family Suidae), inhabiting open ...

Open Wasps
Wasps

name applied to many winged insects of the order Hymenoptera, which also includes ants and bees. Most wasps are carnivorous, feeding on insects,

Water beetles

Aquatic beetle with an oval, flattened, streamlined shape. The head is sunk into the thorax and the hindlegs are flattened into flippers for swimming;

Open Water buffalo
Water buffalo

There are 169 million water buffaloes (Bubalus bubalis) in the world, compared with a cattle population of 1350 million. There are two main types. The

Water bugs

Any of a number of aquatic bugs where all stages of the life cycle (adult, larval, and egg) occur in the water; the eggs are usually attached to the

Open Watercress
Watercress

A Eurasian native, watercress has spread around the world’s temperate regions and often naturalizes where there’s a steady supply of running

Open Watermelons
Watermelons

( see also MELON ) A native of Africa, this ground-hugging vine ( Citrullus lanatus = C. vulgaris ), cultivated for its melons, managed early on to