What is a keystone species?

Fill ups In……………..areas,…………acts as keystone species.

Fill in the blanks with the help of the following given words: [Extinct, North-western,Tropical,fig,ficus, Glomus, Northern, Southern,Pinus,Diversity, Ustilago, Rust,Smut, Staphyfoc. Flemming, Azospirillum, Pasteur, Selaginella, Chara] In……….(1)...........area.........(2)...................acts as keystone species.

What are threatened species? Name three categories of threatened species.

What is an endangered species? Give an example of an endangered plant and animal species each?

What is meant by species composition of a community?

What are endemic species?

What are endangered species?

What are eurythermic species?