The forest that changes color in autumn is:

In bacteria,fungi,and lower plants,various kinds of thick-walled spores are formed which help them to survive unfavourable conditions. This phenomenon can be called ...........

Differentiate between Ectotherms and Endotherms.

In which area does the highest average rainfall occur?

Match the following adaptations in Column $I$ with the respective organisms in Column $II$.

Column $I$	Column $II$
$i$. Thick cuticle on leaf surface	$a$. Desert lizards
$ii$. Leaves reduced to spines	$b$. Archaebacteria
$iii$. Burrow into sand to escape from heat	$c$. Desert plants
$iv$. Hot springs	$d$. Opuntia

Organisms occupying similar ecological niche but different geographical areas of distribution are called as