What is another name for the grass leaf?

The grass leaf is commonly referred to as a blade. This terminology emphasizes the flat, elongated shape of the leaf typical of grasses. The blade is a crucial part of the plant, responsible for photosynthesis by capturing sunlight. In many grass species, the blade is the most visible and recognizable part, contributing significantly to the plant's overall function and appearance.

In contrast, other terms provided in the options refer to different parts of plants. The stem is the main support structure that connects roots and leaves and transports nutrients. Scales are generally associated with structures like those found on some flowers or in the anatomy of conifer cones, serving different functions than leaves. Petioles are the stalks that attach leaves to the stem but do not describe the leaves themselves. Therefore, the term blade is specific and widely recognized for describing the grass leaf.