Advertisements
Advertisements
प्रश्न
Which of the following gets the minimum energy through the food chain in an ecosystem?
(a) carnivore
(b) large carnivore
(c) producer
(d) herbivore
Advertisements
उत्तर
large carnivore
As large carnivores are at the upper trophic levels, they get the minimum energy through the food chain, according to the 10 per cent law.
APPEARS IN
संबंधित प्रश्न
Which of the following are always at the second tropic level of food chains?
List two biotic components of a biosphere.
In the following food chain, 20,000 J of energy was available to the plants. How much energy would be available to man in this chain?
Plants → Sheep → Man
Which of the following belong to the same trophic level?
Tree ; Frog ; Snake ; Grass ; Lizard
What are the various steps of food chain called?
Name one decomposer.
What is the role of decomposers in the ecosystem?
Write down a food chain in the sea.
Write one or two word for the following statement/definition :
Each level of food chain where transfer of energy takes place
Which of the following represents a possible food chain found in a pond :
| Primary producers |
Primary consumers | Secondary consumers |
| (a) green algae | fish | mosquito larvae |
| (b) fish | green algae | mosquito larvae |
| (c) mosquito larvae | fish | green algae |
| (d) green algae | mosquito larvae | fish |
The sea water contains water beetles, tadpole, fish and weeds.
Which organisms are (i) predators, and (ii) prey?
A food chain occurring in the sea which provides food for many people can be written as :
phytoplankton → zooplankton → X → Y
Which organism in the above food chain is a (1) primary consumer, and (2) tertiary consumer?
If a harmful chemical enters a food chain comprising cat, mice and plants, which one of these organisms is likely to have the maximum concentration of the harmful chemical in its body?
Fill in the following blank with suitable word :
Lettuce → ............. → Fox
Will the levels of biological magnification be different at different levels of the ecosystem?
How much energy will be available to hawks in the food chain comprising hawk, snake, paddy and mice, if 10,000 J of energy is available to paddy from the sun?
In the food chain given below, if the amount of energy available at fourth trophic level is 5 kJ, what was the energy available at the producer level?
Grass → Grasshopper → Frog → Snake → Hawk
(a) 500 kJ
(b) 50 kJ
(c) 5000 kJ
(d) 5 kJ
What percentage of sun's energy falling on the leaves of green plants is utilised by the plants in the process of photosynthesis and stored as chemical energy of food?
(a) 99 per cent
(b) 10 per cent
(c) 1 per cent
(d) 20 per cent
Which of the following is an autotroph?
Animals that eat both plants and animals are called as Carnivores.
