AI-generated practice question — model-generated for extra practice, not a previous-year CBSE board question.
(D) 1991
In 1991, plants were added to the list of protected species under the Wildlife Act for the first time, with six species included initially.
Source: Project Tiger, Chapter 2
---
The passage clearly states: "In 1991, for the first time plants were also added to the list, starting with six species." Note that 1972 was when the Wildlife Protection Act was implemented, and 1980/1986 were years when insects were added — common distractors here. Always read options carefully against the specific detail asked.