What is the lower part of the leaf that encloses the stem?

What is the lower part of the leaf that encloses the stem?

• A. Leaf Sheath
• B. Blade
• C. Vein
• D. Petiole

Answer: (A)

In grasses, the leaf is made of two main parts: a base that wraps around the stem and a blade that sticks out. The part at the base that encloses and encircles the stem is the leaf sheath. The blade is the flat, expanded portion you see above the sheath. Veins are the vascular channels inside the blade, and the petiole is the stalk that attaches a leaf to the stem in many non-grass plants but is not the part that wraps around the stem in grasses. So the lower part enclosing the stem is the leaf sheath.

In grasses, the leaf is made of two main parts: a base that wraps around the stem and a blade that sticks out. The part at the base that encloses and encircles the stem is the leaf sheath. The blade is the flat, expanded portion you see above the sheath. Veins are the vascular channels inside the blade, and the petiole is the stalk that attaches a leaf to the stem in many non-grass plants but is not the part that wraps around the stem in grasses. So the lower part enclosing the stem is the leaf sheath.