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प्रश्न
Fill in the following blank with suitable word :
In nature, all green plants are............ whereas animals are consumers.
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उत्तर
In nature, all green plants are producers, whereas animals are consumers.
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संबंधित प्रश्न
"Energy flow in a food chain is unidirectional" Justify this statement.
Construct a food chain comprising the following :
Snakes, Hawk, Rats, Plants
Define decomposers.
What is the role of decomposers in the ecosystem?
Write a common food chain of a pond ecosystem having four links.
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 |
In the figure given alongside, the various trophic levels are shown in the form of a pyramid. At which trophic level the maximum energy is available?
The sea water contains water beetles, tadpole, fish and weeds.
Which organism is a secondary consumer?
Give one example of a food chain having four organisms. Below each organism write the three appropriate terms from the part (a) above which you think it represents.
Write the percentage of energy transferred from autotrophs to the next level in a food chain.
A food chain comprises of cat, seed-eating bird, plants, and dog. The organism which will have the maximum concentration of harmful pesticides coming through the food chain is most likely to be :
(a) cat
(b) plants
(c) dog
(d) seed-eating bird
The harmful chemical which is accumulating in human beings through food chain is :
(a) benzenehexachloride
(b) dichlorodiphenyltrichloroethane
(c) chlorofluorocarbon
(d) abscisic acid
A food chain consists of fish, larvae, phytoplanktons and birds. The level of pesticides in water in which the fish, larvae and phytoplanktons live is quite high.
Write the food chain comprising all the organisms mentioned above.
Primary consumers that eat plants are called _______.
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?
In the given food chain, suppose the amount of energy at the fourth trophic level is 5 kJ, what will be the energy available at the producer level?
Grass → Grasshopper → Frog → Snake → Hawk
Accumulation of non-biodegradable pesticides in the food chain in increasing amount at each higher trophic level is known as
Assertion (A): The energy which passes to the herbivores does not come back to autotrophs.
Reason (R): The flow of energy in a food chain is unidirectional.
Use of several pesticides which results in excessive accumulation of pesticides in rivers of ponds, is a matter of deep concern. Justify this statement.
Which of the following statements is correct?
