According to the $1991$ census,the maximum percentage of population increase was in which state?

Read the given statements and identify the correct and incorrect ones.
$(1)$ The exponential growth curve can be calculated using the formula $N_t = N_0 e^{rt}$.
$(2)$ Bamboo and salmon fish show the production of offspring only once during their entire lifespan.
$(3)$ In the amensalism type of interaction,one species is harmed and the other species receives no benefit or harm.
$(4)$ $A$ competitively superior species eliminates the inferior species in a habitat.

The figure given below is a diagrammatic representation of the response of organisms to abiotic factors. What do $(i)$,$(ii)$ and $(iii)$ represent respectively?

Match the ecological hierarchy given in Column-$I$ with their explanation in Column-$II$. Choose the correct answer from options given below.

Column-$I$	Column-$II$
$a$. Organism	$i$. Flora and fauna of a specific climatic zone.
$b$. Population	$ii$. Populations of different species of an area.
$c$. Community	$iii$. Organisms of same kind inhabiting an area.
$d$. Biome	$iv$. Basic unit of hierarchy.

Identify $X$ and $Y$ in the given figure,which represents the biome distribution with respect to mean annual temperature and mean annual precipitation.

Death is important because it ......