Hello student at graduate level Bsc zoology and botany is offered by Delhi university. Some of the best colleges are as mentioned below -

• Shri Guru Tegh Bahadur Khalsa College
• Zakir Husain Delhi College
• Kirori Mal College
• Ramjas College
• Daulat Ram College
• Hansraj College
• Gargi College
• Miranda House

Admission is based on marks obtained in previous qualifying examination through cut off released by the Universe of Delhi.

For more details refer to the link mentioned below - https://www.google.com/amp/s/university.careers360.com/articles/du-cutoff/amp

Feel free to comment if you've any doubt

Good luck