Question

Q-how red leaves plant have chlorophyll ??

ANSWER IN DETAIL
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Answer 1

There is a small, but very important molecule responsible for this calledchlorophyll. All plants have chlorophyll, which is a green pigment in leaves and stems. Chlorophyll is a light-absorbing pigment, and it actually gets its green color because it absorbs blue and red wavelengths of light.
Non-green leaves with chlorophyl: There are leaves that don't appear green, but do have chlorophyl and therefore can conduct photosynthesis. (See, for instance, refraction effects in white caladiums or the link in the answer by Resonating).

Non-green leaves without chlorophyl: There are leaves that don't appear green because they have no chlorophyl, and so do not conduct photosynthesis. (See, for instance, parasitic plants like the Oronbanche linked by Cactuswoman or this Monotropa)

Answer 2

Hello friend....Some parasitic plants lack chlorophyll entirely and steal the products of photosynthesis from their green hosts, said Susan K. Pell, director of science at the Brooklyn Botanic Garden. Other plants, like a red-leafed tree, have plenty of chlorophyll, but the molecule is masked by another pigment.

Chlorophyll absorbs red and blue light, “reflecting, and thus appearing, green,” Dr. Pell said. Chlorophyll uses this electromagnetic energy, along with carbon dioxide and water, to make glucose and oxygen.

Hope this helps you..