A thin membrane or row of hairs on the inner side of a grass leaf at the juncture of the leaf blade and leaf sheath is called what?

A thin membrane or row of hairs on the inner side of a grass leaf at the juncture of the leaf blade and leaf sheath is called what?

• A. Ligule
• B. Inversion
• C. Insect
• D. Lesions

Answer: (A)

Grass leaves have a thin membrane or row of hairs on the inside where the blade meets the sheath. This structure is called the ligule. It sits at the blade–sheath junction on the inner surface and can be membranous or hairy, varying in appearance among species. The ligule helps define the boundary between blade and sheath and can influence how debris or moisture interacts with the leaf base. The other terms don’t describe a leaf part: inversion refers to a condition or process, insects are organisms, and lesions are signs of damage to tissue.

Grass leaves have a thin membrane or row of hairs on the inside where the blade meets the sheath. This structure is called the ligule. It sits at the blade–sheath junction on the inner surface and can be membranous or hairy, varying in appearance among species. The ligule helps define the boundary between blade and sheath and can influence how debris or moisture interacts with the leaf base. The other terms don’t describe a leaf part: inversion refers to a condition or process, insects are organisms, and lesions are signs of damage to tissue.