Mention any three roles of Botanical gardens.

Explanation

(i) Gardens with aesthetic value which attract a large number of visitors. For example, the Great Banyan Tree (Ficus benghalensis) in the Indian Botanical Garden at Kolkata.
(ii) Gardens have a wide range of species and supply taxonomic material for botanical research.
(iii) It can integrate information of diverse fields like Anatomy, Embryology, Phytochemistry, Cytology, Physiology and Ecology.