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Ecosystem is an interacting system made ...

Ecosystem is an interacting system made up of... a.organisms and their physical surroundings b.producers and consumers c.producers and their physical surroundings d.consumers and their physical surroundings

A

organisms and their physical surroundings

B

producers and consumers

C

producers and their physical surroundings

D

consumers and their physical surroundings

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organisms and their physical surroundings
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A successful forest conservation strategy should involve... a.protection of animals at the highest trophic level. b.protection of only consumers. c.to stop all the products available from forests. d.comprehensive programme to protect all the physical and biological components.

A helicopter of m ass 1000 kg rises with a vertical a c c ele ra tio n o f 15 ms-^(2) . The crew an d th e passengers weigh 300 kg. Give the magnitude and direction of the, (a) Force on th e floor by th e crew and passengers. (b) Action of the rotor of the helicopter on the surrounding air. (c) Force on the helicopter due to the surrounding air.

When frog uses grasshopper as food, then energy flow occurs from ... a.producer to decomposer b.producer to primary consumer. c.primary consumer to secondary consumer. d.primary carnivores to higher carnivores

Which of the following is wrong statement ? a. All green plants and blue- green algae are producers. b.Green plants derived their food from organic compounds c.Producers synthesise their food by using inorganic elements d.Green plants transformed solar energy into chemical energy.

Which of the following statements is correct regarding Genetic Engineering Appraisal Committee (A) It makes decision regarding the validity of the GM crop (B) It ensures the safety of introducing GM organisms for public services (C)Genetic modifications of organisms can have unpredictable results when such organisms are introduced into the ecosystem. Therefore, the Indian government has set up organization such as GEAC (D) All of the above

In food chain. organisms which synthesise carbohydrates by the conversion of radiant energy are called.... a.primary producers b.primary consumers c.primary carnivores d.primary decomposers

Which trophic level, lowest energy available in an ecosystem? a.Producer b.Herbivores c.Carnivores d.Decomposers

Which trophic level has highest energy in an ecosystem? a.Producers b.Herbivores c.Primary carnivores d.Higher carnivores

Statement X:Decomposers satisfy their energy requirement directly from producers. Statement Y : The amount of available energy in an ecosystem depends on the rate of photosynthesis carried out by the producers. Which option is correct for statements X and Y? a. X and Y both correct b.X and Y both incorrect. c.X correct and Y incorrect. d.X incorrect and Y correct.

KUMAR PRAKASHAN-OUR ENVIRONMENT-OBJECTIVE QUESTIONS AND ANSWERS (Choose the correct option from those given below each question:)
  1. Which of the following is an example of biodegradable waste?

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  2. Which of the following is an example of non- biodegradable waste? a.F...

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  3. Ecosystem is an interacting system made up of... a.organisms and thei...

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  4. What is being form due to entry of harmful chemical in food chain?

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  5. What is formed by interdependent organisms to each other for their nut...

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  6. In food chain. organisms which synthesise carbohydrates by the convers...

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  7. In the food chain comprising of a frog. snake. grass. grasshopper. whi...

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  8. An ecosystem has producers. herbivores and carnivores but without whic...

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  9. Which trophic level has highest energy in an ecosystem? a.Producers ...

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  10. Which trophic level, lowest energy available in an ecosystem? a.Produ...

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  11. Which of the following is wrong statement ? a. All green plants and b...

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  12. What is the role of decomposers in an ecosystem?

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  13. Which of the following constitute a food chain ?

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  14. Which of the following are environment friendly practices?

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  15. When frog uses grasshopper as food, then energy flow occurs from ... ...

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  16. Statement X:Decomposers satisfy their energy requirement directly from...

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  17. Statement X: Reduction in number of prey altimately results in reducti...

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  18. Usually green plants are at first level in an ecosystem because... a....

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  19. Which is the correct statement regarding food chain ? a.All consumers...

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  20. Which organism is more affected by biological magnification problem ar...

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