Ecosystem : Interection Between Living Organism

INTERACTION BETWEEN LIVING ORGANISM

1) PREY-PREDATOR
2) COMPETITION
3) SYMBIOSIS

PREY-PREDATOR
- a relationship where an animal captures and eat another animals
                      examples: owl → rat
                                     tiger → goat/deer
                                     frog  → insect

 COMPETITION
- relationship where organisms compete with each other for food, light, water, shelter, mate or minerals

examples: compete for food

                 compete for light

- there are two type of competition :
                                                     i) Intra specific competition
                                                     ⅱ) Inter specific competition

SYMBIOSIS
-Three type of symbiosis : 
                                         ⅰ. commensalism
                                         ⅱ. mutualism
                                         ⅲ. parasitism 

Commensalism : - Relationship between two organisms. 
                                - The commensal benefit from the host
example :

                                                           tree and bird's nest fern.

Mutualism : - interaction that benefits both organisms
example : 

flower and bee

 Parasitism : - interaction that benefits the parasites
                        - host is harmed by the parasites

                                                                 mosquito and human

BIOLOGICAL CONTROL
» a method of using living things to kill the pests 
» use prey-predator relationship

Ladybird and the Aphids
-ladybird eat the aphids that can save the plant
-aphids (insect) can destroy the plant

Advantages of using biological control :
⋟ does not pollute the environment
⋟ does not kill other pests because natural enemies are used
⋟ cheap and safe to used