How many species of reptiles are present in the Amazonian rainforest?

Give the correct descending order of organisms with reference to their estimated number found in the Amazon rainforest:
$(a)$ Plants
$(b)$ Invertebrates
$(c)$ Fishes
$(d)$ Mammals
$(e)$ Birds
Choose the correct answer from the options given below:

According to $IUCN$ $(2004)$,what is the total number of plant and animal species described so far?

India has $.......$ $\%$ of the world's land area,its share of the global species diversity is an impressive $.......$ $\%$ .

Which of the following groups has the highest number of species in the world?

Which one of the following has the highest number of species in nature?