CBSE 12th

Hi Vanshika,
In DUET test B.Sc. Life Science course not given but to get into du as per du eligibility you should have minimum 50% in your 12th here I'm giving you the syllabus of three year B.Sc. Life Science course hope it helps you
first year : Applied Biology
Biostatistics
Biodiversity - Plants
Biotechnology
Development Biology
Cell Biology
Biodiversity- Animals
Development Physiology
Second Year:
Ecology
Evolution
Genetic Engineering
Environment Management
Environmental Science
Plant Tissue Culture
Diversity of Cryptogams
Food, Nutrition & Health
Animal Tissue Culture
Third Year:
Inorganic Chemistry
Genetics & Genomics
Phsyics
Organic & Physical Chemistry
Molecular Biology
Introduction to Medical Diagnostics
Introduction to Computers & Information Systems
Mathematics for Life Sciences.

Hello,
Yes, you should take B.Sc and B.Ed courses combined after Class 12th Science to become a Science teacher. You are eligible to become a teacher in government school, for that you need to do 1 year B.Ed programme from any recognized university and after that you have to apply for TET (Teacher Eligibility Test) entrance exam. Here's the eligibility criteria for TET exam
Candidate needs to be graduate in any stream. Minimum 50% of marks needed in order to get admission. In some institutes/universities admissions took place on basis of written test. After completing B.Ed course you need to qualify the TET entrance examination in order to get Teacher Job in Government school. If you do M.Sc after B.Sc. Then, you also have a chance to become professor in Government colleges. After completing M.Sc course you need to appear and qualify in CSIR NET exam which is conducted by UGC. Eligibility Criteria for CSIR NET:
Candidates completed their Master degree with minimum 55% are eligible to apply for CSIR NET exam. Applicants age should be less than or equal to 28 years for Junior Research Fellowship. There is no age limit for Lectureship. Hope it helps.