Hey aspirant,

Yes, you can do BE biotechnology even if you are a Biology student and you don't have math

but yes not all the college offers BE biotechnology to Biology students.

For example,

NITs offer btech biotechnology, like NIT Calicut NIT Durgapur etc but you cannot get admission for BE biotechnology in NITs as they offer admission through jee Main and it is compulsory to have studied mathematics in 10 + 2 to be eligible for JEE Mains.

Colleges like VIT offers B tech biotechnology to Biology students.

For example,

To be eligible  VITEEE exam for btech biotechnology , one needs an aggregate of at least 60% in Physics, Chemistry, Mathematics/Biology in 12tg board exam or 50 % in aggregate of physics chemistry maths/ biology is belongs to sC or St category

So, both Math and Biology students are eligible for B tech biotechnology in VIT .So being a Biology student you can pursue BTech or BE biotechnology in VIT.
Hope this helps. All the best!