What is a defining stem feature of sedge?

What is a defining stem feature of sedge?

• A. Triangular, solid stems
• B. Thin, hollow, round stems
• C. Square, ridged stems
• D. Flattened, winged stems

Answer: (A)

Sedges are best identified by their stem shape. A defining feature is a three-angled, triangular cross-section with a solid interior. This gives the stem noticeable edges—hence the common reminder that “sedges have edges.” In the field you can test by feeling the stem’s corners or by breaking it to see that it’s not hollow, which helps separate sedges from grasses (which are usually hollow and round) and from plants with square or flattened stems. So the triangular, solid stem is the key trait that makes a plant a sedge.

Sedges are best identified by their stem shape. A defining feature is a three-angled, triangular cross-section with a solid interior. This gives the stem noticeable edges—hence the common reminder that “sedges have edges.” In the field you can test by feeling the stem’s corners or by breaking it to see that it’s not hollow, which helps separate sedges from grasses (which are usually hollow and round) and from plants with square or flattened stems.

So the triangular, solid stem is the key trait that makes a plant a sedge.