Which structure is the stalk that supports the leaf blade away from the stem?

Which structure is the stalk that supports the leaf blade away from the stem?

• A. Leaf axil
• B. Cuticle
• C. Stomata
• D. Petiole

Answer: (D)

The stalk that connects the leaf blade to the stem is called the petiole. It grips the stem at a node and carries the leaf blade away from the stem so the blade can better capture light, while also housing vascular tissues to transport water, minerals, and sugars between the stem and leaf. The other structures have different roles: the leaf axil is the angle between a leaf and the stem where an axillary bud sits; the cuticle is the waxy outer layer that protects the leaf; and stomata are tiny openings on the leaf surface for gas exchange. In leaves without a stalk, the blade attaches directly to the stem, but the term for the stalk when present remains the petiole.

The stalk that connects the leaf blade to the stem is called the petiole. It grips the stem at a node and carries the leaf blade away from the stem so the blade can better capture light, while also housing vascular tissues to transport water, minerals, and sugars between the stem and leaf. The other structures have different roles: the leaf axil is the angle between a leaf and the stem where an axillary bud sits; the cuticle is the waxy outer layer that protects the leaf; and stomata are tiny openings on the leaf surface for gas exchange. In leaves without a stalk, the blade attaches directly to the stem, but the term for the stalk when present remains the petiole.