lForm 4
 
Plasma membrane
Concept of osmosis
Effect of osmosis
Osmosis - Paramecium
Enzyme
Hydrolysis
Mitosis
Digestion
Photosynthesis
Respiration
Succession - mangroove
Succession - pond
Reproduction - microbe
Concept of green house
Green house effect

 

 

 

 

 

 

 

 

 

 

 

Paramecium lives in pond (fresh water) so its body is hypertonic compared to the surrounding. This will cause water move into its body. If Paramecium does not control the excess amount of water, its body will swell and finally burst. Paramecium has two contractile vacuoles to control the excess movement of water into its body. When water enters its body, the contractile vacuole will swell and when it reach its maximum size, the vacuole burst and release water to the surrounding.