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

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

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

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

Timber vegetation is generally not found in which of the following regions?

Which among the following trees is found at the highest elevation from the sea level?