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.
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
Written in 1929.
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
Evert Christiaan Wassink has written: 'Effects of light intensity on dry matter production and morphogenesis of iris \\' -- subject(s): Effect of light on, Gladiolus, Irises (Plant), Plants, Tulips, Irises (Plants)
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 mean "Holland tulips", it means tulips from Holland.
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.