Correct: Botanical gardens maintain living plant collections for study.

Correct: Plants are grown to help identify species.

Correct: Labels always show scientific and family names.

Wrong: The National Botanical Research Institute (NBRI) is in Lucknow, but it is not commonly referred to simply as "National Botanical Garden." Furthermore, the premier/oldest garden, the Indian Botanical Garden, is in Howrah. More specifically, the phrase "National Botanical Garden" usually refers to the Central National Herbarium/Indian Botanical Garden area which is at Howrah (near Kolkata), not Lucknow.

(e) Wrong: The National Botanical Research Institute (NBRI) is in Lucknow, not Howrah. The Indian Botanical Garden is in Howrah.