Biology

Yes, you can.
Don't Lose Hope.
You can still try again and write the CBSE improvement examination.
But, most probably you will not fail. I have seen the results of students who don't know anything about physics scoring above 40 marks easily in the theory exam.
Hence, you will pass the physics paper and will not Fail easily.

Hi,
Your question is not clear to me.
For applying for microbiology honours one must have biology or biotech and phys., chem. and maths in 10+2 level.
As ancillary subjects one can have either Phys. and Chem. or Comp. Sc. and Chem.

Yes, you can become a teacher through hard work and dedication.

Hi,
There could be many options:
B.Sc Physics
B.Sc Chemistry
B.Sc Biology
B.Sc Computer Science
BA
B.Sc Bioinformatics
B.Pharma
B.Sc Forensic Sciences
and many more. Please check the Shiksha listing for other options and requirements
https://www.shiksha.com/science/bsc-chp8

Of course, but for that, you will have to do a lot of higher education, which means a post-graduation degree followed by research job in any premier forest and wildlife research institutes of India like FRI, TFRI , NCBS etc.

B.Sc with Zoology /Botany/ Anthropology /Physiology /Biochemistry/ Microbiology. Followed by post-graduation. You will also require to clear NET exam to be eligible as a lecturer.

You have many options:
1. B.Sc zoology, B.Sc botany, B.Sc Physiology, B.Sc anthropology - all these subjects are in colleges, and biology is taught in schools aswell. So, you have a huge career option open for you, as a teacher or lecturer.
2. You can opt for B.Sc Microbiology, which is an upcoming field and also has lots of scope in research.

Yes, why not for getting admission in biotechnology B.Pharma they give chance for biology students to apply for UPSEE exam plese go through UPSEE information bulletin for detailed information about All 10 paper exam.