Locomotary organs in animals

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This document describes the locomotory organs of various animals, including pseudopodia of amoebas, legs and wings of birds, flagella of euglenas, setae of earthworms, myotome muscles and fins of fish, tentacles of hydras, body tubes of jellyfish, cilia of paramaeciums, appendages of prawns, tubefeet of starfish, muscular feet of snails, legs of toads, and hands and legs of humans.

Education

Locomotory organs of animals
Vertebrates and
invertebrates
Zoology

Cockcroach
Wings and Walking
legs (3Pairs)

Malpighian Tubules. Malpighian tubules remove nitrogenous wastes (uric acid) from the hemocoel. Various ions are actively transported across the outer membrane of the tubule. Water follows these ions into the tubule and carries amino acids, sugars, and some nitrogenous wastes along passively. Some water, ions, and organic compounds are reabsorbed in the basal portion of the Malpighian tubules and the hindgut; the rest are reabsorbed in the rectum. Uric acid moves into the hindgut and is excreted in the feces. Coxal Glands in Arachnids. ( a ) The gut and excretory systems of a spider. The stercoral pocket is a diverticulum off the hindgut that stores waste prior to waste elimination. ( b ) Coxal gland muscles attach to the thin saccular fi ltration membrane. These muscles promote fi ltration and fl uid fl ow (black arrows) by contracting and relaxing along the tubular duct. Water and solutes are reabsorbed along the tubular duct.

Parental care in amphibians and reptiles

ayesha sahi

Any form of parental behavior that appears likely to increase the fitness of the parent’s offspring. Parents of some animals go to great lengths to increase their offspring’s survival prospects by protecting them from predators, food shortages, desiccation, and a range of other environmental hazards. First off all they decide the oviposition site. Any place where small puddles of still water form can provide a suitable nesting site. Sites range from potholes, tapir tracks, and large leaves to human made ditches, road ruts, and even plastic bowls Rheobatrachus females brooded tadpoles in their stomachs, and the young emerged from the females In case of moor frogs, males stay to guard the clutch. They attack anyone who approaches it! They do not leave the post until tadpoles hatch. Only then, starving fathers go to land and may eat well.

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