hi,

you did not mention which entrance exam you are preparing for. for b.sc courses admission questions generally come from numerical aptitude, english and the relevant subjects of admission. some of the books you may follow,

Wiley's Textbook of Botany for NEET and other Medical Entrance Examinations

ncert books of life science, chemistry , physics.

Hi

For which University are you asking for bsc botany Entrance Examination ?

I mean you have not mentioned the name of the university or college level entrance examination for which you are asking for question paper ,but without knowing the name of the university or college we can't help you

In case if you are asking for BHU then for bsc botany , you have to qualify it's BHU UET entrance examination for bio group, the link for the same is provided below

https://university.careers360.com/articles/bhu-uet-sample-papers/amp

Thankyou