A Cactus - it has a modified stem which produces flowers, but no leaves.
A Rose has leaves and flowers.
A type of plant that has pink flowers and hairy leaves is called a Woodland Margin.
A real fun and educational gift is the TickleMe Plant Greenhouse. In it you can grow a real house plant that moves and closes its leaves when you Tickle it! It even flowers!
You describe a thallophyte. thallus is a plant body which doesn't have any differentiated leaves, roots, flowers
The flowers and the leaves
Chives
Yes plant growth occurs at stem, leaves, flowers and roots. The flower after fertilization grow in to the fruit.
They're often the flowers actually... not the leaves.
Flowers and leaves are dried and used medicinally. The leaves are at their most potent when harvested just after the plant flowers.
Magnolia
A stem is a support for the leaves and flowers on the plant.
The Stem