Transfer of energy from one trophic level to other trophic level is according to the second law of thermodynamics. The efficiency of energy transfer from herbivorous to carnivorous is
$25\%$
$50\%$
$10\%$
$5\%$
In an ecosystem, the population of
Distinguish between
$(a)$ Grazing food chain and detritus food chain
$(b)$ Production and decomposition
Assertion : A network of food chains existing together in an ecosystem is known as food web.
Reason : An animal like kite cannot be a part of a food web.
The number of trophic levels in an ecosystem are limited. Comment.
Match the trophic levels with their correct species examples in grassland ecosystem.
$(a)$ Fourth trophic level | $(i)$ Crow |
$(b)$ Second trophic level | $(ii)$ Vulture |
$(c)$ First trophic level | $(iii)$ Rabbit |
$(d)$ Third trophic level | $(iv)$ Grass |
Select the correct option :
$(a)\quad(b) \quad(c) \quad(d)$