Paramecium 1
Paramecium
Paramecium is a ciliate protozoan. Covered with fine cytoplasmic hair-like structures called
cilia. Flickering movements of the cilia propel the organism through the water and also create
feeding currents.
cytoplasm
meganucleus
(controls basic processes)
micronucleus
(controls reproduction)
contractile
vacuole
contractile
vacuole (filling)
60µ
cilia
direction of
movement
food
vacuole
oral groove
anal pore
Food vacuole
Paramecium has a distinct and permanent shape and certain areas of cytoplasm, (cell organelles),
are specialised to carry out specific functions.
Locomotion. Individual cilia bend and straighten rapidly. The bending stroke helps
propel the paramecium through the water.
.
recovery
power
stroke
1 Paramecium
hits an obstacle
If paramecium encounters an obstacle, it reverses
the ciliary beat and moves back. This reaction also
shows that paramecium is sensitive to stimuli
2 reverses its
(in this case, the stimulus of touch).
ciliary beat
3 turns
slightly
4 moves
forward
again
Paramecium 1
Label Picture:
Use the text book pg 212-215 and the information given to write the organelles and fuction
Structure
A.
B.
C.
D.
E.
F.
Function
Paramecium 1
Label Picture
Use the text book pg 212-215 and the information given to write the organelles and function
EUGLENA
Structure
A.
B.
C.
D.
E.
Function