Which is NOT related to Francis Buchanan?

The correct answer is Option (2) → Judge/Attorney General to Lord Wellesley.

Option (1) Surgeon to the Governor-General Lord Wellesley. — Correct statement. For a few years Buchanan was surgeon to the Governor-General of India, Lord Wellesley.

Option (2) Judge/Attorney General to Lord Wellesley. — Incorrect statement. Buchanan was a physician, not a judge or a law officer; he came to India and served in the Bengal Medical Service from 1794 to 1815.

Option (3) Zoo organiser in Calcutta. — Correct statement. During his stay in Calcutta he organised a zoo that became the Calcutta Alipore Zoo.

Option (4) Incharge of the Botanical Garden. — Correct statement. He was also in charge of the Botanical Gardens for a short period.