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.
:D. Invertebrates have a hard outer shell, called an exoskeleton. Muscles are attached to the inside of the exoskeleton, and contraction of these flexes the joints. It depends on what animal it is. A jellyfish, for instance, moves by swaying its body back and forth. A caterpillar uses its small legs to move. I hope this helped... :D