Monocot or Dicot plants and flowers?

Monocot plants - wheat, oats, barley and sweetcorn are all monocots. Palms, Orchids, and most bulbous plants are monocots.

Monocot flowers - the tulip and lily

Dicot plants - cotton, sunflower, soybeans

Dicot flowers - geranium, snapdragon, and citrus.

EDIT - the Orchid family is the largest family of the flowering plants

Monocot plants Coconut, all palms, all grasses, bamboos
- Monocot flowers: Canna, gladiolus, lilies. tuberose
- Dicot plants: Mango, Cassia, Teak, all pulses
- Dicot flowers: Roses, Hibiscus, Jasmine, pleumeria
Orchids belong to family Orchidaceae and orchid flowers grow on orchid plants.

An inspection of a monocot plant will show that the flower parts (petals, etc) are nearly all in sixes (sometimes in threes or fours) so daffodils, orchids, palms and lilies are all monocots. As a rule - but not invariably - the leaves are strap shaped too, so grasses and sedges are also monocots.

Dicots are commonly 5-merous (as botanists put it): 5 petals, 5 stamens and so on but there are many exceptions. The leaves generally have a network of veins so buttercups, violets, dahlias, begonias and so on are dicots. Relatively few monocots are trees, the main exception being the palms; bananas are monocots but are giant herbs rather than true trees.

The orchids we buy for a bouquet or a buttonhole are simply the flowers of an orchid plant.