Wonders of Living World (Part 3)

                                           Characteristics of Organisms

Growth 

This increase in size, height or amount is called Growth.

Nutrition

Satisfying the food requirements of organisms is are called Nutrition.

Most green plants produce food within themselves. Hence, these plants are called autotrophic.

They use carbon dioxide from air, soil water and sun light to produce food. This process is called photosynthesis.

Animals can't produce their own food. They depend on plants directly or indirectly. Therefore, animals are considered as heterotrophic.

A cow eating grass

A lion eating an animal

Movement

Animals moving from one place to another place is called locomotion.

Several animals locomotion's

Swimming:-  

Creeping:-         

Running:-   

Flying:-           

 Walking:-      

There are some animals that cannot move, but they show different movement. Sea Anemone, Coral Polyp living in oceans are such animals.

Sea Anemone  

Coral Polyp

Movement of plant 

There are some example of movements of  plant

Mimosa     

When a plant is kept on a window still, after some days the stem of the plant bend towards the sunlight. This too is a movement of plant.

Plant bending towards sunlight

Respiration

Oxygen in the air, once breathed in, reacts with the food stored in the body and produce energy. This process is called respiration.

     

Reproduction

A matured living being producing new members of the same species is known as reproduction.