The diagrams show a transverse section of a stem, and a transverse section of a root. (a) Explain what is meant by the term transverse section?

The transverse section divides the body into superior and inferior (head and tail) portions. It is typically a horizontal plane through the center of the body and is parallel to the ground. Transverse section is across the length is also called a cross-section.

The diagrams show a transverse section of a stem, and a transverse section of a root. (b) Make a copy of the diagram that shows a transverse section of a stem. Label the xylem tissue

Xylem vessels run from the roots of the plant right up through the stem. They branch out into every leaf. Phloem tubes are made of many cells joined end to end. However, their end walls have not completely broken down. Stem sections show the vascular strands arise in a band of two circles-smaller bundles and larger bundles. Both types of vascular bundles are connected to each other to the epidermis with the sclerenchyma as well.

The diagrams show a transverse section of a stem, and a transverse section of a root. (c) Make a copy of the diagram that shows a transverse section of a root. Label the xylem tissue

Xylem vessels and phloem tubes are usually found close together. A group of xylem vessels and phloem tubes is called a vascular bundle. The positions of vascular bundles in roots and shoots are as follows: In a root, vascular tissue is found at the centre, whereas in a shoot vascular bundles are arranged in a ring near the outside edge.

The diagrams show a transverse section of a stem, and a transverse section of a root. (d) On your two diagrams, label the position of phloem tissue.

Xylem vessels and phloem tubes are usually found close together. A group of xylem vessels and phloem tubes is called a vascular bundle. Phloem tubes are made of many cells joined end to end. However, their end walls have not completely broken down. In a root, vascular tissue is found at the centre.

E M B I B E

Cambridge IGCSE® Biology Coursebook Third Edition>Chapter 8 - Transport in Plants>Questions>Q 8.5

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Upper Secondary: IGCSE

IMPORTANT

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What is a vascular bundle?

Important Questions on Transport in Plants

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Upper Secondary: IGCSE

IMPORTANT

Cambridge IGCSE® Biology Coursebook Third Edition>Chapter 8 - Transport in Plants>Questions>Q 8.6

What is the function of a root cap?

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Upper Secondary: IGCSE

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Cambridge IGCSE® Biology Coursebook Third Edition>Chapter 8 - Transport in Plants>Questions>Q 8.7

Explain how water goes into root hairs. How does this process differ from the way in which minerals enter?

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Upper Secondary: IGCSE

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Cambridge IGCSE® Biology Coursebook Third Edition>Chapter 8 - Transport in Plants>Questions>Q 8.8

What is transpiration?

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Upper Secondary: IGCSE

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Cambridge IGCSE® Biology Coursebook Third Edition>Chapter 8 - Transport in Plants>End-of-chapter questions>Q 3

The list below includes the parts of a plant through which water moves as it passes from the soil into the air. For each part in the list state whether the water is in the form of a liquid or a gas as it passes through it.

Xylem, stomata, root cortex cells, air spaces in leaf, root hairs, leaf mesophyll cells.

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Upper Secondary: IGCSE

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Cambridge IGCSE® Biology Coursebook Third Edition>Chapter 8 - Transport in Plants>End-of-chapter questions>Q 4

The diagrams show a transverse section of a stem, and a transverse section of a root.

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