Botany

The OUAT consists of questions from Maths, Physics, chemistry and bIology. Please refer to the link provided below for details regarding exam pattern and marks distribution for different subjects. You should plan to prepare for your exams accordingly, and study subjects which you are strong in, and also improve on subjects in which you think your concepts are not that clear. Make a proper time table and eat, sleep and follow healthy habits during your preparation.
https://www.shiksha.com/science/exams/ouat-entrance-exam/pattern

Hi Neeraj. Eligibility for NASA Exam are given below:
Qualification:
Candidate should have Bachelor's degree from an accredited institution in engineering, biological science,
Physical science or mathematic and should have good academic records.
Candidate should have ability to pass the NASA long-duration space flight physical.
Specific requirements:
Distant and near visual acuity:
Must be correctable t20/20, each eye
Blood pressure not exceed 140/90
Standing height between 62 and 75 inches

You should have passed B.Sc. examination with at least seven units (i.e.minimum required for majoring in a subject) in Microbiology.

You can do a post graduation from special courses like M.Sc from chemistry, biochemistry, botany, zoology. You can prefer any recognised university for admission process like Delhi University, BHU, IIT-JAM for any IIT's & NITs admission. For further information, go to the official website of universities. For bio students, some universities do not prefer M.Sc chemistry. So mind it for admission.

Please refer to the link provided below for details regarding admissions in M.sc. Botany in Rajasthan University. Additionally, you can also download their brochure which contains important information regarding admissions, course eligibility, entrance exams (if any) etc.
https://www.shiksha.com/science/course/m-sc-botany-university-of-rajasthan-jaipur-31237

Yes, you are eligible to apply. You should possess MA/ M.Sc/ M.Com in the relevant subject with B.Ed.

PG Courses After B.Sc
B.Sc graduates have a wide variety of options available in terms of topics, subjects, & field . They have an option to pursue a post graduation degree in their respective field. Students can also join non-science master degree courses such as animation, management, journalism, computer technology, etc after the completion of B.Sc degree.

Dear, you can go for Master's in botany, zoology, chemistry, biotechnology, microbiology, Bioinformatics. Good luck.