Which statement best distinguishes grasses from broadleaf plants and herbaceous from woody plants?

Which statement best distinguishes grasses from broadleaf plants and herbaceous from woody plants?

• A. Grasses are dicots with net-veined leaves.
• B. Grasses are monocots with a single seed leaf, narrow leaves with parallel veins, and a fibrous root system; Broadleaf have two seed leaves and net-veined leaves; Woody plants have bark, while herbaceous lack bark.
• C. Woody plants have no bark.
• D. Broadleaf plants always have woody stems.

Answer: (B)

Key ideas here are the big structural differences among grasses, broadleaf plants, and whether a plant is woody or herbaceous. Grasses are monocots, which means they typically have one seed leaf (cotyledon). They also show leaves with parallel veins and a fibrous root system that fibers out rather than a single deep taproot. Broadleaf plants, on the other hand, are mostly dicots with two seed leaves and leaves with a net-like (reticulate) venation pattern. When it comes to how a plant grows year after year, woody plants form substantial lignified tissue that becomes wood and they have bark, while herbaceous plants do not develop much woody tissue and usually lack bark. This combination of monocot characteristics for grasses, dicot characteristics for broadleaves, and the presence or absence of bark for woody versus herbaceous plants is what makes the statement correct. The other options mix up these distinctions—for example, grasses are not dicots with net-veined leaves, woody plants do have bark, and broadleaf plants are not always woody.

Key ideas here are the big structural differences among grasses, broadleaf plants, and whether a plant is woody or herbaceous. Grasses are monocots, which means they typically have one seed leaf (cotyledon). They also show leaves with parallel veins and a fibrous root system that fibers out rather than a single deep taproot. Broadleaf plants, on the other hand, are mostly dicots with two seed leaves and leaves with a net-like (reticulate) venation pattern. When it comes to how a plant grows year after year, woody plants form substantial lignified tissue that becomes wood and they have bark, while herbaceous plants do not develop much woody tissue and usually lack bark. This combination of monocot characteristics for grasses, dicot characteristics for broadleaves, and the presence or absence of bark for woody versus herbaceous plants is what makes the statement correct. The other options mix up these distinctions—for example, grasses are not dicots with net-veined leaves, woody plants do have bark, and broadleaf plants are not always woody.