Hi Aqeel,

If you are interested in taking admission in Engineering than why would you be writing biology in the KCET Exam. As you have studied Physics, Chemistry and Mathematics, so you have to write only these subjects.

Yes, if you are interested in B.Pharma or B.Sc.(Hons.) then you may write biology there.

Refer here for more detailed information about KCET 2020 - https://www.careers360.com/exams/kcet

Feel free to ask doubts in the Comment Section.

I hope this information helps you.

Good Luck!