Which of the following species is restricted to a specific area?

Statement $A$: As moving from equator to polar region,species diversity decreases.
Statement $R$: Amazon rain forest of South America has less biodiversity.

Read the following statements:
$(A)$ India has a greater ecosystem diversity than Norway.
$(B)$ According to the $IUCN$ $(2004)$,the total number of plant and animal species described so far is slightly more than $1.5$ million.

In India, we find mangoes with different flavours, colours, fibre content, sugar content and even shelf-life. The large variation is on account of

Who proposed the rivet popper hypothesis?

Study the following pie chart regarding the global diversity of plants and select the correct option.