Ecological niche is
the surface area of the ocean
an ecologically adapted zone
the physical position and functional role of a species within the community
formed of all plants and animals living at the bottom of a lake
According to Allen's rule, the mammals from colder climates have
shorter ears and longer limbs
longer ears and shorter limbs
longer ears and longer limbs
shorter ears and shorter limbs
Salt concentration (salinity) of the sea measured in parts per thousand is
$10-15$
$30-70$
$0-5$
$30-35$
Formation of tropical forests needs mean annual temperature and mean annual precipitation as
$18-25^{\circ} \mathrm{C}$ and $150-400 \mathrm{~cm}$
$5-15^{\circ} \mathrm{C}$ and $50-100 \mathrm{~cm}$
$30-50^{\circ} \mathrm{C}$ and $100-150 \mathrm{~cm}$
$5-15^{\circ} \mathrm{C}$ and $100-200 \mathrm{~cm}$
Which of the following forest plants controls the light conditions at the ground?
Lianas and climbers
Shrubs
Tall trees
Herbs