Yeka Sub City Education Office

External Parts of a Leaf
There are mainly three parts of a leaf:
👉Leaf Base: It is the lowermost part of a leaf.
👉Petiole: The thin stalk with which leaf is attached to the stem is called petiole. The petiole is commonly known as leaf stalk.
👉Functions of Petiole:
It holds the leaf to the stem
It helps in transporting water and nutrients absorbed by the roots to the leaves.
👉Lamina: The lamina is the flat and green part of the leaf with veins and vein lets. Lamina is commonly known as Leaf Blade. 
👌Lamina is further divided into these parts:
👉Leaf Apex – the tip of the leaf blade,
👉Leaf Margin – the boundary (edge) of the leaf and,
👉Main Leaf Veins – In the middle of the lamina (leaf blade), a prominent mid-rib or main vein connects with the petiole.
👉Secondary Leaf Veins: The veins branching from the primary vein are called secondary veins.
👉Functions of Lamina:
The primary function of the lamina is photosynthesis.

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25.2K viewsNov 2, 2023 at 10:57

External Parts of a Leaf
There are mainly three parts of a leaf:
👉Leaf Base: It is the lowermost part of a leaf.
👉Petiole: The thin stalk with which leaf is attached to the stem is called petiole. The petiole is commonly known as leaf stalk.
👉Functions of Petiole:
It holds the leaf to the stem
It helps in transporting water and nutrients absorbed by the roots to the leaves.
👉Lamina: The lamina is the flat and green part of the leaf with veins and vein lets. Lamina is commonly known as Leaf Blade. 
👌Lamina is further divided into these parts:
👉Leaf Apex – the tip of the leaf blade,
👉Leaf Margin – the boundary (edge) of the leaf and,
👉Main Leaf Veins – In the middle of the lamina (leaf blade), a prominent mid-rib or main vein connects with the petiole.
👉Secondary Leaf Veins: The veins branching from the primary vein are called secondary veins.
👉Functions of Lamina:
The primary function of the lamina is photosynthesis.

ቻናላችን
👇👇👇👇
👉https://www.tgoop.com/dam76

BY Yeka Sub City Education Office