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Both leaf veins contains xylem & phloem vessels while human veins are blood vessels.

As a group, discuss and comment on:

1. The similarity between the appearance of leaf veins and human blood vessels in the picture above.

2. The similarities between the function of leaf veins and human blood vessels.

3. Considering their functions, reasons for the similarity in the appearance of leaf veins and human blood vessels.

4. The differences between the function of leaf veins and human blood vessels.

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As a group, consider the advantages of larger hands over smaller ones. Suggest why some leaves have larger leaf blades than others.

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As a group, consider the advantages of longer arms over shorter ones. Suggest why some leaves have longer leaf stalks than others.

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1. What are the parts of an arm - forearm and hand of a human, equivalent to in a leaf?

2. Consider the parts of an arm - the forearm and the hand. How are their functions similar to that of the parts of a leaf?

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As a group,

1. Find and take a clear picture of a dicot leaf from a plant that you can find in school.

2. Label the leaf stalk, leaf blade and a vein.

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In our syllabus, we will focus on leaves of dicot(yledonous) plants. Consider the labelling of two dicot leaves below.

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As a group,

1. Observe the four leaves and sort them into two groups. e.g. 1 & 2, 3 & 4

2. Explain your reason for the sorting by comparing the structural features of two groups of leaves.

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