Question

explain nutrition in living things with examples

Answer 1

          Food is the material from which organisms obtain the energy required to sustain life and carry out all the other functions of living things. Food also provides the raw materials for growth and repair. The study of food and feeding is called nutrition.

There are two types of nutrition:

They are autotrophic and heterotrophic.

Autotrophic nutrition: Autotrophic organisms make their own food by a process called photosynthesis.They manufacture sugar and starch from carbon dioxide and water using the energy of sunlight to drive the necessary chemical reactions.

Example:
      Green plants,

Heterotrophic nutrition: Heterotrophic organisms obtain their food from the bodies of other organisms. This is done in various ways.

Examples:
             Herbivores such as cattle, tortoises and sparrows eat plants.
       Carnivores such as lions, crocodiles, sharks and kestrels eat the flesh of other animals.
       Omnivores such as humans can eat both plants and animals.      
       Saprophytes such as many types of fungi and bacteria, obtain their food in liquid form from the remains of dead organisms. 
        Parasites such as tapeworms and mosquitoes live on or in another living organism (called the host) from which they obtain food.