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My name is Poon Cheng Moh. I have been teaching biology in SMK(P) Raja Zarina, Port Klang for 26 years. I sincerely hope that this blog on SPM Biology will be useful to both teachers and students.

Sunday, February 16, 2014

Amali Book – Pg 4-6



Aim : To show the presence of xylem as a continous tube system to transport  water

Observations
Cross section of a balsam root

Cross section of a balsam stem


Discussion
1.       Xylem tissue
2.       Yes
3.       The vascular tissues in the stem are arranged in a circle with the phloem tissue located in the outer layer.  In the root, the xylem tissues are found in the centre and are shaped like a star whereas the phloem tissues are between the radii of the xylem.
4.       A long tube filled with coloured water. This tube is the xylem tissue as it forms a continuos tube system to transport water.

Conclusion
The xylem tissues form a continous tube system from the root to the stem and leaves in transporting water in a plant.

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