Which of the following natural biomes/ecosystems possesses the highest species biodiversity in the world?

In which of the following ecosystems is species diversity relatively higher?

Which one among the following covers the highest percentage of forest area in the world?

Among the following states, which has highest forest density in India?

Which one of the following is not essentially a species of the Himalayan vegetation?

Which one of the following is the natural vegetation of South east China ?