Which group of plants are monocots?

Monocots, or monocotyledons, are a group of flowering plants that are characterized by having a single seed leaf, or cotyledon. This structural feature influences various aspects of their growth and development. The correct answer identifies grasses and sedges as examples of monocots.

Grasses, which belong to the Poaceae family, exhibit parallel leaf venation and flower structures that typically consist of three petals and three sepals. Sedges, belonging to the Cyperaceae family, share similar characteristics with grasses but often have triangular stems and are commonly found in wetland areas. Both groups embody the fundamental traits associated with monocots, such as fibrous root systems, and their flowers typically exhibit a symmetry that aligns with monocot characteristics.

The other options represent groups of plants that fall into different categories. Dandelions and roses are examples of dicots, which have two seed leaves and exhibit other distinct structural features. Pines and firs are conifers and do not belong to the flowering plants' categories at all, as they reproduce through seeds that are not enclosed in a fruit. Cacti and succulents include both monocots and dicots but are primarily known for adaptations to arid environments and do not specifically identify as monocots.