Ok Plants

In: Science

Submitted By vernice
Words 715
Pages 3
Investigating Water Conserving Structures in a Range of Terrestrial Australian Plant
Specimens
Aim:

- To make observations and draw water conserving structures present in various
Australian xerophytic plants and to relate these structures to their functions.
Hypothesis:
It is believed that a range of xerophytic Australian plants will demonstrate water conserving structures such as rolling of the leaves, thin and long leaves, thick layer of cuticle, hairy leaves, small leaves and flowers, sunken stomates and swollen stem to adapt to their arid environment. Materials:
• Leaves, stems, flowers and fruits of Casuarina, Eucalyptus, Cactus, Acacia, Hakea,
Spinefex, and Banksia
• Internet and BIF textbook images/drawings or prepared glass slides of xerophytes
• Stereo microscope
• Compound Optical Microscope
• Glass slides
• cover slips
• mounting needle
• forceps
• magnifying glasses or hand lens
Risk Assessments:

- Extra care is needed when handling microscopes and the prepared glass slides as
-

breakages might occur. Place the microscope and glass slides away from the edges of the table to avoid them from falling.
When handling the different types of xerophytic plants, make sure they are away from eyes, nose and face as allergies or skin irritation to plants may occur if inhaled or held for too long, always wear apron or gloves if necessary.

Method:
1. Observe and draw the leaves of the xerophytic plants
2. Noticing their distinctive features including the leaves, stem flowers and fruits.
3. Use a compound microscope, magnifying lens or stereo microscope to observe the positions of the stomates, presence of hair and mid vein on the leaves and other distinctive features of the specimens.
4. Use the internet for secondary sources and BIF for prepared images and compare results 5. Record observations of the specimens in a table…...

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