Yes, you still have some hope to get admission in M.Sc. Botany in Delhi University under the SC category with your CUET PG score of 109 in Botany and 130 in Biotechnology.

Here's why:

DU gives reservations to SC candidates, and the cutoff scores for SC category are generally lower than General or OBC. While your score of 109 in Botany is on the lower side, DU takes admission through multiple rounds, and sometimes vacant seats are filled in later lists.

Also, some DU colleges under the Botany department may have slightly lower closing scores for SC students, especially in 2nd or 3rd admission rounds.

Biotechnology score of 130 is also decent and could help if you apply in interdisciplinary courses or other related programs if available.

Final suggestion: Keep checking DU's PG admission portal regularly and make sure your preferences are filled carefully. Wait for all rounds.