Biology

After 10+2 exams, you can join a fashion or interior designing institute that offers a Bachelors in Fashion/Interior Designing. You can appear for national level design entrance exams too. There are some institutes offering a 4-year Bachelor's degree.

Yes, the admissions were over in April itself.

All subjects given in the syllabus is compulsory including Biology. This is the syllabus of the exam:
https://www.iiseradmission.in/?page_id=66

Revise all the syllabus of class 11th and class 12th.

No, for B.Tech in IT, Maths is compulsory up to class 12th.

No, language will be included.

Zoology, Botany and Chemistry.

Eligibility Criteria for B.Pharma is:
Pass with 60% aggregate marks in 10+2 (with English, Physics, Chemistry and Biology or Maths) or equivalent, subject to qualifying NEET or Other Entrance test. So, you can apply for the same if you have studied Mathematics in 12th. A few very good colleges for doing pharmacy are. IIT VARANASI, JMI, New Delhi, Lovely Professional University, Jalandhar-Punjab, Bit -Ranchi, Bombay College Of Pharmacy, Mumbai, Goa College Of Pharmacy, Panji, Institute Of Chemical Technology, Mumbai.