A ________leaf is directly attached to the stem without a leaf stalk.
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Solution
Leaf:
Leaf is thin, green, and dorsoventrally flattened structure emerging from the node present on the stem. The axils of leaves are characterized by the presence of a bud known as axillary bud.
The different parts of the leaf are the lamina, petiole, midrib, and leaf base.
Petiole:
The green, broader part of the leaf known as lamina is attached to the stem by means of a short, narrow structure known as petiole.
Sometimes, this petiole is missing in plants. Thus, the leaf is in direct attachment with the stem without a petiole or leaf stalk. Such leaves are known as sessile leaves.
Example:
Leaves of plants zinnia.
Final answer: A sessile leaf is directly attached to the stem without a leaf stalk.
