greetings,

with 75.25, it may be difficult for you to get admission in honours courses like bsc hons botany or bsc hons zoology, but you may get admission in bsc physical sciences.

you may get admission in the following colleges for bsc physical sciences:

• acharya narendra dev college
• maharaja agrasen
• rajhdhani college

pls refer to the following link for previous year cut-off:

http://www.du.ac.in/cut-off.html

hope this helps.

good luck