Tulips. has written:
'The silver serpent'
Halina Barbara Klein has written: 'Tulips' -- subject(s): Translations into English
R. Mulder has written: 'De periodieke ontwikkeling van de Darwin-tulp' -- subject(s): Tulips, Growth (Plants), Cycles
It was written in the Netherlands.
Written in 1929.
Valerie Schloredt has written: 'A Treasury of Tulips' 'Germany' -- subject(s): Juvenile literature 'The United States of America, the land and its people' -- subject(s): Juvenile literature
G. J. Saaltink has written: 'A new disease in tulip caused by Corynebacterium oortii nov. spec' -- subject(s): Corynebacterium oortii, Diseases and pests, Tulips
Margaretha C. Cremer has written: 'Developmental stages of flower formation in tulips, narcissi, irises, hyacinths, and lilies' -- subject(s): Bulbs, Flowering of Plants, Plants, Flowering of
tulips (two lips...)
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.