Support and Movement - Biology Form 4
In earlier studies you learnt that all living orgasms carry out movement. Animals move from place to place in search of food, territory, mate or escape danger. Plants movements are not locomotory in nature. Their movement is mainly by growth responses. They grow towards useful stimulus or away from injurious ones. All organisms have support structures which enables them to bear their body weight as well as maintain their body forms. Both plants and animals possess a variety of structures that helps in support and movement.
By the end of this topic you should be able to:
Explain the necessity of support and movement in animals and plants
Describe the arrangement and the role of supporting tissues in young and old plants
List functions of the exoskeleton and endoskeletons
Describe locomotion in a named finned fish
Identify the bones of the axial and appendicular skeleton in a mamma
Describe the structure and functions of different types of joints in a mammal and explain how muscles bring about movement
Distinguish between the different types of muscles, their location and functions
SUPPORT AND MOVEMENT IN PLANTS AND ANIMALS
Support is the ability of an organism to bear its weight and maintain its body form. Movement on the other hand refers to displacement of parts of the body or the whole organism from one position to another. Plants mainly display localized movement while animals display both localised and locomotory movement. In this topic, we will look at the following: -
- The necessity for support and movement in plants and animals
- Locomotion in finned fish
- Structure of bones
- Axial and appendicular skeletons
- Types and functions of movable joints
- Structure, functions and locations of cardiac, smooth, and skeletal muscles
- Role of muscles in movement of the arm in human.
Click on the play button to view the aniation.
Support and movement in plants Movement enables plants to adequately adjust to the environment. The movement occurs at cellular level and at organ level. Play the animation to see different types of movement in plants
Necessity for support in plants
Support tissues enable plat parts to be held upright for maximum light absorption.
Play the animation to see sun rays reaching broad leaved plant.
Support tissue position the flower appropriately for pollination.
The video clip shows an insect reaching a brightly colored flower and carrying the pollen. Click on the play button to watch the video.