Get Leaf Structure Lab Answer Key

There are three main parts of a leaf – Leaf base, leaf lamina, and petiole. There are two different types of leaves – simples leaves and compound leaves.

The leaf is a flattened green outgrowth that is carried on the node of the stem. It is particularly adapted to perform the function of photosynthesis.

Typically, a leaf consists of a broad expanded blade (the lamina), attached to the plant stem by a stalklike petiole. In angiosperms leaves commonly have a pair of structures known as stipules, which are located on each side of the leaf base and may resemble scales, spines, glands, or leaflike structures.

Structure of a Leaf. A leaf's external parts are the petiole, leaf base, lamina, leaf apex, and leaf edge.

Functions of stomata: Its prime function is to exchange the gases by closing and opening the pores in the leaves. It assists in eradicating excess water from the leaves. It removes oxygen and takes in carbon dioxide at the time of photosynthesis. It assists in monitoring the movement of water via transpiration.

The tip of the leaf blade is called leaf apex.

Leaf is a flattened structure of a higher plant, typically green and blade-like, that is attached to a stem directly or via a stalk.

Apex: tip of the leaf • Margin: edge of the leaf • Veins: carry food/water throughout leaf; act as a structure support • Midrib: thick, large single vein along the midline of the leaf • Base: bottom of the leaf • Petiole: the stalk that joins a leaf to the stem; leafstalk • Stipule: the small, leaf-like appendage to a ...