Organisms that feed on feed on other consumers belong to the
a) first trophic level
b) second trophic level
c) third trophic level
d) none of these
Primary consumers form……..
a) first trophic level
b) second trophic level
c) third trophic level
d) none
The trophic level in ecosystem can be represented by………..
a) numbers
b) units
c) alphabet
d) none of these
The amount of energy that remain available from plant growth after subtracting the friction that plants uses for respiration is called
a) net primary production
b) ecosystem gross productivity
c) both a and b
d) none of these
Productivity in land ecosystems generally rises with temperature up to about
a) 30 c
b) 20 c
c) 40 c
d) 50 c
Due to warm ,the land primary productivity
a) highest
b) lowest
c) mid
d) none of these
