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Nature Study • Botanical Morphology
A leaf is composed of three vital organs: the blade (broad and flat), the veins (raised and hard ribs), and the stem (slender stalk holding the leaf to the plant).
A leaf is composed of three vital organs: the blade (broad and flat), the veins (raised and hard ribs), and the stem (slender stalk holding the leaf to the plant).
Morphological Parts: apex (tip), base (bottom), and margin (smooth or toothed edge).
1
The Three Parts of a Leaf: Blade, Veins & Stem
Answer the textbook questions in complete, scientific sentences using descriptive words from the classic lesson.
1. Three Parts:
The three principal parts of every leaf are the , , and .
2. Blade & Veins:
The blade is , while the veins are .
3. Stem Function:
The slender stem .
2
Anatomy & Seasonal Alchemy: Apex, Margin & Color
Explain the anatomy of the blade and observe how leaves transform throughout the seasons of the year.
4. Apex & Base:
The pointed tip of the blade is the ; the lower part is the .
5. Leaf Margins:
The outer edge is the margin; some are , while others are .
6. Seasonal Colors:
In spring, leaves are ; in autumn, they change to .
3
Botanical Sketch & Scientific Description
Follow the textbook command: “Make a picture of the leaf.” Draw a leaf outline, label its 5 parts (Apex, Margin, Veins, Base, Stem), and write 1 descriptive sentence.
[ Draw Leaf Here ]
Scientific Sentence: