DEMO|TOPIC 02-MOVEMENT

 

TOPIC 02-MOVEMENT 

Movement is the act of changing position/ posture by the whole organism or part of the organism

Types of movement

1. Movement of curvature (growth movement)

2. Movement of locomotion

1. MOVEMENT OF LOCOMOTION

This is the type of movement where by the whole organism moves from one place to another

Movement in locomotion is shown in all animals and some protoctists exhibit variety of movements. Animals and some protoctists exhibit variety of movements, these are

1. Amoeboic

2. Ciliary

3. Muscular

4. Flagella

I. AMOEBA MOVEMENT

Is the type of movement exhibited by some protozoans such as Amoeba and white blood cell (WBC); amoeba movement is caused by streaming of the cytoplasm towards a peripheral region of the cell resulting into projections known as PSEUDOPODIUM

The cytoplasm steaming into these projections is withdrawn from others and flows in one direction to bring about movement

II. CILIARY MOVEMENT

This is the type of movement where by some (protozoan) organism use cilia for movement

These protozoans are paramecium and larvae of some aquatic animals. The body of such organism is covered by thousands of small hair like structures called cilia. Movement is brought about by word noted backward and forward beating of cilia. The backward pushing of water (propels) pushes the organism forward

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