Page 82 - Biology Form Two

Biology for Secondary Schools

Chapter Four

Transport of materials in
FOR ONLINE READING ONLY

flowering plants

Introduction

Plants need a transport system to transfer manufactured food from the
photosynthetic sites, mostly in the leaves, to other parts. The transport system

is also required to move water and dissolved minerals from the roots to the rest
of the plant. The transport of raw materials, minerals, water, and food in plants
occurs through a systematic network of tissues that make up the vascular system.
In this chapter, you will learn about mechanisms for transporting materials in
flowering plants which include the vascular system, absorption and movement

of water and mineral salts, and transpiration. The competences developed will
enable you to use proper measures to maintain the survival of plants.

Think and associated supportive fibres
that transport nutrients and fluids
Flowering plants without a vascular throughout the plant body.
system
Transport of materials in plants
The vascular system occurs through the vascular system.
Task 4.1 The vascular system is made up of

Search the library and internet sources for specialised cells that form tiny straw-
the components of the vascular system. like tubes. The vascular system is
Note down what you have observed. composed of a collection of conducting
tissues and associated supportive
The vascular system in plants is an fibres. The conductive tissues are of
assemblage of conducting tissues two types, namely xylem and phloem
tissues (Figure 4.1). These two tissues

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