AP BIOLOGY

Detailed explanation-1: -The correct option is A Petiole. Each leaf typically has a leaf blade called the lamina, which is also the widest part of the leaf. Some leaves are attached to the plant stem by a petiole. Leaves that do not have a petiole and are directly attached to the plant stem are called sessile leaves.

Detailed explanation-2: -In botany, the petiole (/ˈpiːti. oʊl/) is the stalk that attaches the leaf blade to the stem, and is able to twist the leaf to face the sun. This gives a characteristic foliage arrangement to the plant.

Detailed explanation-3: -The petiole is the part of the leaf which joins it to a stem or branch. It can also be called leaf stalk.

Detailed explanation-4: -The petiole part of the leaf is also called as mesopodium. The lamina part of the leaf is called as epipodium. Thus, the correct answer is ‘Mesopodium. ‘

Detailed explanation-5: -The leaf is attached to the plant stem by the petiole. In the leaf blade, the midrib along with lateral veins forms leaf’s skeleton and provides mechanical support to leaf. They also transport both water and minerals. The peduncle is the stalk of a flower.