Yes, all grasses belong to the monocot group of flowering plants. Monocots, short for monocotyledons, are characterized by having a single seed leaf, or cotyledon. This distinct feature sets them apart from dicots, which have two seed leaves.
Grasses, part of the family Poaceae, share several key characteristics typical of monocots, such as parallel leaf venation and fibrous root systems. Additionally, they usually feature flowers with three petals or multiples of three. Examples of common grasses include wheat, rice, corn, and various types of lawn grass. The monocot classification helps in understanding the evolutionary relationships among plant species and aids in their identification and cultivation.