NEET BIOLOGY

Detailed explanation-1: -In monocotyledon-Bihall leat like structures called stinnles. In m the leaf base expands into a she base expands into a sheath covering the stem partially or wholly. In some legumino plants the leafbase may become swollen, whic ve called the pulvinus.

Detailed explanation-2: -Explain the lines: In monocotyledons, the leaf base expands into a sheath covering the stem partially or wholly.

Detailed explanation-3: -In monocotyledons, the leaf base expands into a sheath covering the stem totally or partially. In some leguminous plants, the leaf base may become swollen which is called Pulvinus.

Detailed explanation-4: -Sheathing of leaf base means the presence of a leaf base that is broad and envelops the stem. Main parts of a leaf are-the lamina, petiole, and leaf base. The leaf base is the part of the leaf that attaches to the stem. Several monocot plants like wheat, maize, grass, etc have sheathing leaf bases.

Detailed explanation-5: -leaf sheath (plural leaf sheaths) (botany) A structure at the base of a leaf’s petiole that partly surrounds or protect the stem or another organ that it subtends.