Find out the population density when $N$ is $1000$ and $S$ is $100\, m ^{2}$
$10$
$1000$
$1$
$100$
Select the correct match
$(I)$ | $(II)$ | $(III)$ |
$(a)$ $+$ | $(i)$ $-$ | $(P)$ Amensalism |
$(b)$ $-$ | $(ii)$ $-$ | $(Q)$ Commensalism |
$(c)$ $-$ | $(iii)$ $0$ | $(R)$ Predation |
$(d)$ $+$ | $(iv)$ $0$ | $(S)$ Competition |
Animals living in colder region have shorter tail and ears as compared to the animals living in warmer regions. This phenomenon is called
The figure given below is a diagrammatic representation of response of organisms to abiotic factors. What do $A,\,B$ and $C$ represent respectively?
Exotic species are also called
$I.$ introduced species
$II.$ alien species
$III.$ non-indigenous species
$IV.$ non-native species
Choose the correct combination
In demography we study