Why plants grow towards the light. 1  Botany: A Stem's 'Sense of Self' Contributes to Shape. 2  Scientists Discover C4 Photosynthesis Boosts Growth by Altering Size, Structure of Plant Leaves, Roots. 3  Cellulose Goes Off the Rails: Without Microtubule Guidance, Cellulose Causes Changes in Organ Patterns During Growth.
Tasting hairs on the legs of a roach can not only help it determine a food source, but help it avoid pesticides as well. Glycocides -- poison baits mixed with glucose -- were traditionally used to dose the sweet-loving cockroach with lethal toxins.
Both of these groups of invertebrates have long, segmented bodies with either one pair (centipedes) or two pairs (millipedes) of legs on each segment. Their food preferences vary greatly. Centipedes: Centipedes have pair of poison claws behind the head and use the poison to paralyze their prey, usually small insects. However, the jaws of centipedes are weak and can rarely penetrate human skin. The rare individuals who are bitten may experience localized swelling and pain no worse than a bee sting.