Advertisements
Advertisements
प्रश्न
The following statement is true or false :
Only 10 per cent of the light energy given by the sun is available for transfer at each higher trophic level in a food chain.
Advertisements
उत्तर
False. Only one per cent of light energy is trapped by plants, and of this, only 10 per cent is transferred at each trophic level in a food chain.
APPEARS IN
संबंधित प्रश्न
Which of the following belong to the same trophic level?
Tree ; Frog ; Snake ; Grass ; Lizard
Can the organisms of any trophic level be removed without causing any damage to the ecosystem? Will the impact of removing all the organisms in a trophic level be different for different trophic levels?
What is a food chain?
What is a 'food web'? Show its formation.
In a food chain, the third trophic level is always occupied by :
(a) carnivores
(b) herbivores
(c) decomposers
(d) producers
What will happen if deer is missing in the food chain given below?
Grass → Deer → Tiger
One of the following is not a consumer. This one is :
(a) giraffe
(b) antelope
(c) algae
(d) alligator
The following is a food chain that ends with human :
plants → bee → human
Explain how plants provide food for bees.
What would happen to the number of rabbits and grass plants if the number of foxes decreased?
What would happen to the number of grass plants and foxes if the number of rabbits increased?
In a food chain consisting of grass, frog, bird and insects, where will the concentration of the harmful chemicals be maximum?
With the help of a food chain, explain how biological magnification of harmful chemicals can occur.
Which common pesticide has accumulated in human body in considerable amounts?
The ten per cent law is associated with
(a) transfer of energy from various trophic levels to decomposers in a food chain
(b) transfer of ATP energy into muscular energy
(c) transfer of chemical energy from one organism to another
(d) transfer of sun's energy to the organisms called producers.
A food chain comprising birds, green plants, fish and man. The concentration of harmful chemical entering the food chain will be maximum in ______.
Food chains are very important for the survival of most species.
If 10,000 J solar energy falls on green plants in a terrestrial ecosystem, what percentage of solar energy will be converted into food energy?
Animals that eat both plants and animals are called as Carnivores.
What will happen if deer is missing in the food chain given below?
Grass → Deer → Tiger
Use of several pesticides which results in excessive accumulation of pesticides in rivers of ponds, is a matter of deep concern. Justify this statement.
