National Botanical Research Institute is located at

Explanation-

The national botanical research institute is located at- Lucknow

An important function of a botanical garden includes-
a. To grow plants of local flora and to keep the record.
b.To provide living plant material for systematics work
c. Different seeds and plant materials can also be provided by the botanical garden for further research.
d. Maintaining and growing endangered plants.


Final Answer-

So, The correct option is D