Tulips bloom to spread and receive pollen, like other flowers. They receive and spread pollen at the same time because like many other plants, tulips are hermaphrodites.
wait...didn't you just answer your own question...in your question? You said that 14 are red, so doesn't that answer your question?
Tulips do not spread like some other plants through underground rhizomes or runners. They tend to stay in place and multiply by producing offsets, which are small bulbs that develop around the base of the original bulb.
Tulips can reproduce through seeds, but they are more commonly grown from bulbs for faster and more reliable results. When grown from seeds, it can take several years for tulips to mature and produce flowers.
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
Tulips are bulbs