How these animals move?
snail, fish, cockroach,birds, earthworm & snake
Snails move like worms by alternating body contractions with stretching, with a proverbially low speed (hence the term snail mail for postal services). They produce a slime in order to aid locomotion by reducing friction. The slime also reduces the snail's risk of injury and helps keep away potentially dangerous insects like ants. In winter some snail species hibernate in their shells by closing the opening with a thin shell-like plate that they build only for this use and destroy in spring. Even some slug species build a shell-like object below their upper skin.
Snails are eaten in several countries of Europe, where they are considered a delicacy.
the body of earth worm is made up many rings end to end. an earthworm does not have bones. it has muscles which help to extend and shorten the body durning movement, the earthworm first extends the front part of the body,keeping the rear portion fixed to the ground. then it fixes the front end and release the rear end. it then shortens the body and pulls the rear end forward. this makes it moves forward by a small distance.reoeating such muscles expansions and contractions, tje earthworm can move through soil. its body secretes aslimy substance to help movement.
the fish makes a jerk and pushes the body forward. a series of such jerks make the fish swim ahead. thie is helped by the fins of the tail. fish also have other fins on their body ehich mainly help to keep the direction,while swimming.
snakes have a long backbone. they have many thin muscles. they are connected to each other even though they are far from one another. muscles also interconnected the backbone,ribs and skin. the snake's body curves into many loops. each loops of the snake gives it a forward push by pressing against the ground .since its long body makes many loops and each loops gives it this push, the snake moves forward very fast and not in a straight line.
Gait of Animals
Earthworms move easily on hard and slippery surfaces.
Gait of earthworms
Earthworms move easily on hard and slippery surfaces. Earthworms have tiny, stiff hair-like projections, called bristles, under their body. They grab the soil with the help of these bristles. Earthworms first stretch and then contract their muscles to move. As a result, they cover only a small distance with every move. A slimy substance secreted by the earthworm helps it to move. Earthworms eat their way through the soil. They throw away undigested food, which improves the quality of the soil.
Gait of snails
The outer skeleton of the snail, the shell, is made of calcium carbonate. The snail pulls this shell along as it moves. The snail can even hide its head inside the shell. The strong muscular foot below the shell can protrude.
Gait of cockroaches
The cockroach has three pairs of legs that help it to walk, and two pairs of wings that help it to fly. A cockroach moves its legs with the help of muscles near the limbs. It uses its breast muscles help to move its wings and fly. A cockroach can walk, fly and even climb. A cockroach can move in different terrains like sand and wired meshes because of the spines on its legs.
Gait of birds
A bird has a body best suited for flying. Its wings are actually modified forelimbs. Birds can fly easily with the help of these bony forelimbs. Birds have light and hollow bones. The breast bones hold the muscles of flight that help them to flutter their wings. The tail controls the direction of flight. Birds have very strong shoulder bones. They don’t have the urinary bladder, which helps them to fly easily. They can walk and perch on trees with the help of their hind limbs.
Gait of snakes
Snakes move in S-shaped loops and in a zigzag manner. They cannot move in a straight line. They have difficulty in moving on very smooth surfaces. Snakes have a long back bone and many interconnected muscles that help them to slither. They have muscles connecting the backbone, ribs and skin. Snakes move in grass, sand and water. Snakes do not have arms or legs, but even then, they can climb trees.
Gait of fish
Fish have a streamlined body, which helps them move fast in water.