Which type of weeds have parallel-veined leaves?

• A. Grass-like Weeds
• B. Grass Weeds
• C. Annuals
• D. Biennials

Answer: (B)

Leaves with parallel veins are a hallmark of grasses, which are monocots. In these plants, the veins run in the same direction along the leaf, creating a parallel pattern rather than forming a netlike network. Grass weeds—true grasses—display this parallel venation, making them the correct choice when asked which type has parallel-veined leaves. The other options describe life cycles or broader categories rather than leaf structure, so they don’t specifically indicate venation patterns. Grass-like weeds can be monocots and resemble grasses, but the term is less precise for identifying leaf venation, while annuals and biennials refer to how long the plant lives, not leaf arrangement. Examples of grass weeds include crabgrass, foxtail, and Bermuda grass, all of which show parallel-veined leaves.