How do ecologists estimate the total number of species present in the world?
How do ecologists estimate the total number of species present in the world?
The diversity of living organisms present on the Earth is very vast. According to an estimate by researchers, it is about seven millions.
The total number of species presentin the world is calculated by ecologists by statistical comparison between a species richness of a well-studied group of insects of temperate and tropical regions. Then, these ratios are extrapolated with other groups of plants and animals to calculate the total species richness present on the Earth.
Similar Questions
The species diversity of animals on earth is
The species diversity of animals on earth is
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 $15$ millions.
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 $15$ millions.
Given below is the representation of the extent of global diversity of invertebrates. What groups the four portions $(A-D)$ represent respectively?
Given below is the representation of the extent of global diversity of invertebrates. What groups the four portions $(A-D)$ represent respectively?
- [NEET 2014]
Study the following pie chart w.r.t. global diversity of plants and select the correct option.
$A$
$B$
$C$
$D$
$E$
$F$
Study the following pie chart w.r.t. global diversity of plants and select the correct option.
| $A$ | $B$ | $C$ | $D$ | $E$ | $F$ |
What is the approximate ratio of animals and plants species in our country?
What is the approximate ratio of animals and plants species in our country?