Hiiii

SEED entrance Exam is conducted by the Symbiosis Institute of Design (SID). It offers admission in 4 major programes- Communication Design, Fashion Communication, Industrial Design and Fashion Design.  
The eligibility criteria fo the exam is-
Qualifying Exam: Passed 10+2 (in any stream) or equivalent or 10+3 diploma from a recognized university.
Minimum Marks: Pass the above exam with minimum 50% aggregate marks.
Candidates who are appearing 12th or last year diploma examination are also eligible to apply.

There no proper age limit defined in the eligibility criteria laid down by SID.

Hope this helps

Thanks!!