Science

The demand for M.Sc. Zoology would never subside in India or worldwide because the boundaries of career options in Zoology offered are extensive as mentioned below:
Academic researcher. Academic teacher. Ecologist. Media sector. Scientific writer. Animal nutritionist. Marine biologist. Environment consultants. Zoology is a comprehensive study of animals and their biological processes, the links between them and their environment and key aspects of zoological phenomena from molecular to ecological levels. This course at LPU focuses on the structure, function, behaviour, and evolution of animals. Students also study the origin and development of species, their habits, behaviours and interactions. M.Sc. (Hons. ). Zoology degree course also includes the study of morphology, physiology, biochemistry, immunology, embryology, cell and molecular Biology genomics, biotechnology, genetics evolution and ecology. In simpler words, M.Sc. (Hons. ). Zoology degree at LPU is the comprehensive and detailed study of animal sciences. The duration of the course is three years and the course is an important one that opens a lot of career scopes for the candidates after its successful completion. LPU provides a complete hands-on, practical programme with ample of employment opportunities to attempt fieldwork and laboratory work, create technical skills and obtain the experience that employers needs to SEE in candidates. This degree from LPU can lead to a wide variety of job openings and research opportunities in the field of animal studies and natural sciences. Channels such as Animal Planet, National Geographic, and the Discovery Channel provide best offers to work for the zoologists. Zoos, Wildlife parks, and resorts are additionally a various major source of employment for candidates. Being an LPU faculty, I can say that LPU has experienced faculty members, well-equipped labs, great infrastructure, excellent placements, complete training and placement assistance and lot more and that too at a very low fees and high scholarships. All the best!

You won't be eligible for admission into IIT (JEE Advanced) as Chemistry is considered necessary requirement there.
But you can take admission into NIT, IIIT, etc. (JEE Mains) as in place of Chemistry they also accept Biology marks.
You can check JOSAA's official website where they clearly mentioned that admission into BTech from NIT,IIIT,GFTI, etc. requires one to pass 10+2 board examination with Physics and Maths as compulsory subjects, with any one extra subject from these:- Biology, Biotechnology, any Technical Vocational subjects such as Computer Science.
This change in requirement was brought recently via a new rule from AICTE.
But IITs refused to accept this change, so you still require PCM as eligibility criteria for IITs, i.e. JEE Advanced.
Hope this helped.

The eligibility to get admission in BVSC. Is 50% marks from a recognized board
B. V. Sc Eligibility
Before taking admission to the BVSC programme, you must be completely aware of the eligibility criteria of the BVSC programme to avoid the cancellation of your candidature at any stage of admission. Check the BVSC eligibility criteria below:
Candidates must have passed their 10+2 with subjects Physics Chemistry Biology and with a minimum of 50% in aggregate from CBSE /ICSE/State Board or equivalent. Some universities and colleges conduct entrance exams for the candidates to be eligible for the course. Eligibility to most veterinary colleges and universities is based on marks secured in the entrance examinations conducted by the respective universities and colleges. Some students who have passed their 10+2 in Zoology are also eligible to join veterinary colleges as lateral entry students. Candidate must have passed 10+2 examination with a minimum of 50% marks from any recognized board of education or its equivalent qualification.
Candidates must have studied Physics Chemistry Biology and English as the main subject in their qualifying exam.

A diploma in Nautical Science is a sub-discipline of Marine studies. This programme focuses on the skills needed to navigate and operate maritime vehicles safely. Its study consists of a well-balanced mix of academic and practical instruction. It generally lasts for 1 year. Eligibility for Diploma in Nautical Science is coming through 10+ 2. Admissions for such courses are based on merit as well as entrance. The average programme fee for Diploma in Nautical Science ranges from INR 2,00,000 to 3,00,000. Some of the best Diplomas in Nautical Science colleges in India are Dr. B. R. Ambedkar Institute of Technology, Indian Maritime University, CTM, Chennai, etc.