Distance/Correspondence

No, the eligibility is the bachelor's degree. For more details refer to the distance education department website of NLSIU. (http://ded.nls.ac.in/).

Yes, you are eligible for MBA abroad. Canada has one of the top universities, try for that.

Lateral admission is possible for B.Sc, but very few colleges provide lateral entry for BA. Hence, Diploma holder student can take lateral entry admission for B.Sc or BA.

Please refer to the link provided below for details regarding a course in B.Sc. zoology from JDWC. You can also download their brochure which contains details regarding admissions in JDWC, course eligibility, application process, etc.
https://www.shiksha.com/science/course/b-sc-hons-in-zoology-j-d-women-s-college-jdwc-patna-184826

Hi
Distance learning engineering degrees are not valid and you can see the recent supreme court order where technical courses have been completely derecognised for any approvals and they have invalidated all degrees received after 2005.
Check below article for more details.
http://topdistancemba.com/2017/11/20/deemed-universities-not-allowed-run-distance-learning-2018-2019/
Regards
Ramneet

Please refer to the link provided below where you can find important information for a distance MBA from CVRU in Bilaspur. You can download their brochure which contains admission procedures followed, entrance exams(if any), course eligibility, rankings and reviews etc.
https://www.shiksha.com/mba/course/distance-mba-dr-c-v-raman-university-bilaspur-239064