B.Sc

Yes, you can appear for IIT JAM.

Yes, you can pursue the same. But, why would you like to have two Bachelor degree?

You can refer to this link for details: https://www.shiksha.com/university/tezpur-university/tuee-exam-syllabus?course=991.

Mathematics is the universal subject which is always in demand. After your B.Sc in Maths, you can apply for CA TA and Ticket Collector, in the Indian Railway from small to a large scale. As far as Travel and Tourism industry is concerned, you need to be a confident person first of all. This has always new things to learn every day. The recruiters demand skilled, confident, well groomed and diligent personalities to become part of travel and tourism industry. I can confidently tell you that B.Sc in Travel and tourism has more career opportunities than Mathematics.

Hello Rajya,
Career options after Statistics graduation holders are huge. You can employ as Government Statistical officer and various posts in Indian statistical services, RBI, PSU and so on. Data Analyst (professional in SAS mandatory) also good option if you're aspiring to work in Top MNC's. Financial services Actuarial statistician, Biostatician in healthcare industries. All the Best for your future.

Yes, you can do. Eligibility: Minimum 50% marks are required in graduation.
Visit this link for more details: https://www.shiksha.com/science/course/m-sc-in-agriculture-agronomy-sanskriti-university-mathura-282945

Hello, there are some colleges that have the specific requirement for Bachelors in psychology to get into the Masters programme. But, there are some colleges whose pre requisite is only graduation in any field.