Topic 5: Support and transport sytems in plants

FOCUS on Life Sciences Grade 10 Page 92 - 111

Core Content:

Anatomy of Dicotyledonous Plants (link to Grade 7)

• Root and stem: the distribution of different tissues;

• the structure of cells in different tissues (link to plant tissues)

• Secondary growth (link to cell division); the annual rings in a tree trunk to assess age and to infer climate change.

Transpiration

The relationship between water loss and leaf structure (link to Term 1).

Factors that affect the rate of transpiration are:

• temperature;

• light intensity;

• wind;

• humidity.

• Wilting and Guttation

• the intake of water and minerals into the xylem in roots;

- the transport of water and minerals to leaves;

- The translocation of manufactured food from leaves to other parts of plant

Gr10 Topic 5_support &transport in plants CC.pptx

Topic 5 Powerpoint presentation

gr10 transpiration worksheets.docx

Transpiration worksheets

2. Activities to be completed in workbook:

Act. 2 Draw a cross section of a root (page 95)
Act. 3 Draw a cross section of a stem (page 96)
Act. 4 Examine secondary thickening in a dicotyledenous stem (page 98)
Act. 5 Examine annual rings (page 99)
Act. 6 Consider the economic uses of plants (page 100)

Act. 7 Use a potometer to measure the rate of transpiration (page 102) - use the virtual lab simulation on a desk top computer to collect results for light intensity, temperature and air movement for ONE of the plant species provided to complete this activity.

Act. 8 Investigate the use of a potometer (page 103)
Act. 9 Explain guttation and wilting (page 104)
Act. 10 Investigate water uptake through the roots (page 106)
Act. 11 Investigate water movement through xylem (page 107)
Act. 12 Investigate transpiration pull (page 108)
Act. 13 Understand ring-barking of trees (page 109)

Test Practice (page 111)

Please complete the Test Practice in your workbooks. Once you have done this, click on the link below to submit your answers in the Google Form provided.

TOPIC 5 Test Practice (page 111)