Which plant type typically has hollow stems?

Monocots, or monocotyledons, are a group of flowering plants that are characterized by having one embryonic leaf, or cotyledon. One of the key physical features of many monocots is the presence of hollow stems. This structural characteristic provides additional support without adding significant weight, allowing for growth in a variety of aquatic environments.

Examples of monocots include grasses, lilies, and many aquatic plants like cattails and sedges, which are often found in wetlands or near water bodies. The hollow stems in these plants enhance buoyancy, enabling them to thrive in watery habitats and adapt to various ecological conditions.

In contrast, deciduous trees typically have solid trunks, whereas perennials and biennials can exhibit solid stems. Therefore, the distinct tendency of monocots to possess hollow stems makes them uniquely adapted for their environments, reaffirming why this option is the correct answer.