You cut a tulip at the very end of the stem at a 45 degree angle. You can cut the stem as short as you want to put in a certain size vase after you have cut it properly from the ground.
Cut tulips continue to grow because of phototropism. When cut and placed in a vase, the tulips bend towards the light, and so they elongate.
Cut tulips cannot be rooted, as they lack the necessary stem structure to develop new roots. Unlike some other plants, tulips do not regenerate from cut flowers. If you want to propagate tulips, it's best to do so from bulbs or by planting seeds. For cut tulips, they can last longer in a vase with proper care, but they will not grow roots.
Tulips Lillies
Cutting and wrapping tulips is a very delicate process. The following website offers some tips and tricks to help your tulips last longer, http://gardening.about.com/od/craftsanddecor/qt/TulipCare.htm
Tulips belong to the class Magnoliopsida, which is part of the division Angiosperms, commonly known as flowering plants. Within this class, they are classified under the order Liliales and the family Liliaceae. Tulips are known for their distinctive cup-shaped flowers and are popular in gardens and as cut flowers. There are many species and varieties of tulips, each with unique colors and shapes.
If you mean "Holland tulips", it means tulips from Holland.
There are no specific collective noun for tulips. I have seen suggested, an explosion of tulips and a tiptoe of tulips. However, any noun suitable for the situation can be used, for example, a field of tulips, a bouquet of tulips, a bunch of tulips, etc.
If you are saying that "1 in 4" of the tulips are red, the answer would be 4 of the tulips are red.
No, tulips are multicellular organisms.
Tulips
Tulips are angiosperms.
Tulips Tulips