Diversity in Living Organisms

The body of earth worm is soft as it does not have bones. It moves by the peristaltic action of muscles and affixes itself to the ground with the help of large number of tiny bristles. Also, its body secretes a slimy substances to help the movement.

Snail is an animal which is having outer skeleton called shell or the lid. It has a foot made of strong muscles. It is a very slow moving animal with a wavy motion. Bristles is not a part of snail's body but is a body part of earth worm.

Snail is an animal which is with outer skeleton called shell or the lid. It has a foot made of strong muscles. It is a very slow moving animal with a wavy motion.

Birds are the living organisms which can fly in the air and walk on the ground. For this they need to have lighter bodies with light and hollow bones. For flying, they have strong shoulders bones and a streamlined body to act against air currents.

Birds are the living organisms which can fly in the air and walk on the ground. Pigeon, vulture and sparrow are not at all adapted to swim in water but birds like swans and ducks are adapted for the same.

Different organisms have different mode of movement from one place to another. E.g. fish swims in water, human beings walk, monkey jump and snake slithers to move from one place to another. Slithering is the zig-zag movement of the whole body of snake.

Cockroaches have outer skeleton made of different jointed units. Snakes have a long single back bone. Fishes have stream lined body to swim well in water. In birds, the forelimbs are modified as wings.

Different organisms have different mode of movement from one place to another. E.g. fish swims in water, human beings walk, monkey jump and snake slithers to move from one place to another. Slithering is the zig-zag movement of the whole body of snake. Also earthworm moves by crawling and cockroach by climbing. So, it is snakes: walking which is a mismatched pair.

Streamlined body is found in organisms which are adapted for flying or swimming. It helps them to cut through air and water currents. Snake is a terrestrial animal which does not have a streamlined body.

Birds are the living organisms which can fly in the air and walk on the ground. The bones of the bird hindlimbs are typical for walking and perching and the bony part of forelimbs are modified as wings.

Snakes slither to move from one place to another. Slithering is the zigzag movement of the whole body of snake.

Habitat of animals and plants in different regions depends upon their body structure and their adaptability. For example, animals like Yak, lions and ants live on ground and are known as terrestrial animals. Animals like fish, whales, sharks live in water and are known as aquatic animals. Crab is an animal which is generally found on the sea shores or beaches as it is neither completely terrestrial nor aquatic.

Camel is well adapted to the heat of the desert. Their bodies are adapted variably to fit well over there. Deserts have scarcity of water so to conserve water, camels have long legs to stay away from the heat of the sun, they do not sweat much. They excrete less urine and almost dry dung. Thus all these characteristics of camels help in conserving water.

Generally, the temperature in the mountain regions is low. So, the organisms inhabiting mountainous regions are adapted to survive well in the cold climate as they have thick fur or thick skin on the body so as to conserve the body heat and avoid heat loss to the surroundings.

Mountain rocky slopes are generally slippery to walk over. Animal living an the mountains have strong hooves so as to hold the ground surface well without getting slipped off.