PLANTS
THE LEAF
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Apex
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Petiole
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Leaf apex
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Lamina
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Detailed explanation-1: -i) The part of a leaf by which it is attached to the stem is called lamina.
Detailed explanation-2: -The petiole is the part of the leaf which joins it to a stem or branch. It can also be called leaf stalk.
Detailed explanation-3: -In the picture below, the nodes are the points connecting the petioles to the stem. We call the leaves that are connected to the stem through a simple petiole petiolates.
Detailed explanation-4: -The petiole is a stalk that attaches a leaf to the plant stem. In petiolate leaves the leaf stalk may be long (as in the leaves of celery and rhubarb), or short (for example basil). When completely absent, the blade attaches directly to the stem and is said to be sessile.
Detailed explanation-5: -(a) Petiole: attaches the leaf to stem. (b) Lamina: green flat part of the leaf. (c) Margin: gives shape to the leaf.