10th Class Science Our Environment Question Bank

done Our Enviornment and Management Total Questions - 20

• question_answer1)
  Select the group in which the odd one out is circled incorrectly.
  A)
  done clear
  B)
  done clear
  C)
  done clear
  D)
  done clear
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• question_answer2)
  Food chains generally do not exceed above 3, 4 trophic levels because ____.
  A)
  There are limited number of organisms in an ecosystem done clear
  B)
  Larger food chains increase complications of food web done clear
  C)
  A producer cannot be eaten by more than two herbivores done clear
  D)
  Transfer of energy from one trophic level to other is associated with energy loss done clear
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• question_answer3)
  The pyramid shown here can be the pyramid of _____.
  A)
  Biomass in a forest     done clear
  B)
  Energy in a grassland    done clear
  C)
  Number in a pond        done clear
  D)
  Biomass in pond ecosystem done clear
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• question_answer4)
  What does the given flowchart represent?

  Producers	\[\to \]	Herbivores	\[\to \]	Carnivores
  20 units		2 units		0.2 units

   
  A)
  Unidirectional energy flow done clear
  B)
  Lindeman's law done clear
  C)
  Biomagnification done clear
  D)
  Both (A) and (B) done clear
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• question_answer5)
  Apyramid of____can never be inverted.
  A)
  Energy             done clear
  B)
  Biomass           done clear
  C)
         Productivity     done clear
  D)
         Number done clear
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• question_answer6)
  Select the option that contains only biodegradable wastes.
  A)
  Orange peel, Credit card, Roti done clear
  B)
  Cotton cloth, Mango fruit, Gold foil done clear
  C)
  Tin can, Keyboard, Plastic bag done clear
  D)
  Silk scarf, Mouldy bread, Newspaper done clear
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• question_answer7)
  Use of high temperature for waste disposal is called _____.
  A)
  Composting     done clear
  B)
         Land filling       done clear
  C)
         Recycling       done clear
  D)
         Incineration done clear
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• question_answer8)
  Match column I with column II and select the correct option from the codes given below.

  Column I	Column II
  (a) Herbivores	(i) Orobanche
  (b) Producers	(ii) Hippopotamus
  (c) Carnivores	(iii) Crocodile
  (d) Omnivores	(iv) Cyanobacteria
  (e) Parasites	(v) Ant
  	(vi) Phytoplanktons
  	(vii) Tortoise
  	(viii) Kingfisher

             
  A)

  a	b	c	d	e
  (i),(iv)	(ii), (iii)	(vi)	(v), (vii)	(viii)

                  done clear
  B)

  a	b	c	d	e
  (i), (ii)	(iii)	(iv)	(v), (vi)	(vii), (viii)

                  done clear
  C)

  a	b	c	d	e
  (iii), (iv)	(ii), (vi)	(vii)	(i), (v)	(viii)

                  done clear
  D)

  a	b	c	d	e
  (ii), (vii)	(iv), (vi)	(iii), (viii)	(v)	(i)

    done clear
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• question_answer9)
  Which of the following statements about food chain are correct?

  (i) It includes repeated eating i.e., each group eats the other and is subsequently eaten by some other group of organisms.

  (ii) It shows a series of branching lines and unidirectional flow of energy.

  (iii) It shows the unidirectional flow of energy and proceeds in a progressive straight line.

  (iv) It may consists of more than ten trophic levels depending upon the type of ecosystem.

  A)
  (i) and (ii) only done clear
  B)
  (i) and (iii) only done clear
  C)
  (ii) and (iv) only done clear
  D)
  (i),(iii) and (iv) only done clear
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• question_answer10)
  Which of the following activities will help to sustain environmental balance?

  (i) Usage of platinum jewellery as it will reduce the load on gold mines.

  (ii) Farming as it helps to ensure that man does not eat up all the food producers.

  (iii) Use of synthetic leather as it reduces the number of animals being killed for their skin.

  (iv) Using nuclear energy as it provides an alternative to fossil fuels.

  A)
  (ii), (iii) and (iv) done clear
  B)
  (i), (ii) and (iv) done clear
  C)
  (ii) and (iv) done clear
  D)
  (iii) only done clear
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• question_answer11)
  Which among the following are the artificial ecosystems?

  (i) Estuaries	(ii) Mountain
  (iii) Crop field	(iv) Grassland
  (v) Coral reefs	(vi) Park
  (vii) Mangroves	(viii) Aquarium

   
  A)
  (i), (ii) and (v) only done clear
  B)
  (ii), (iv) and (vi) only done clear
  C)
  (iii), (vi) and (viii) only done clear
  D)
  (ii), (vi) and (vii) only done clear
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• question_answer12)
  Match column I with column II and select the correct option from the codes given below.

  Column I	Column II
  (a) Montreal Protocol	(i) 1992
  (b) Ganga Action Plan	(ii) 1973
  (c) Chipko Movement	(iii) 1986
  (d) First Earth Summit	(iv) 1987

  A)
  (a)-(i), (b)-(iii), (c)-(ii), (d)-(iv) done clear
  B)
  (a)-(i), (b)-(ii), (c)-(iii), (d)-(iv) done clear
  C)
  (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i) done clear
  D)
  (a)-(i), (b)-(ii), (c)-(iv), (d)-(iii) done clear
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• question_answer13)
  The main purpose of water harvesting is not to hold rainwater on the surface of the Earth but to make rainwater percolate under the ground so as to recharge ground water. Which of the following sentences are true for water stored in the ground?

  (i) It does not evaporate.

  (ii) It spreads out to recharge wells and provides moisture for crops over a wide area.

  (iii) It does not promote breeding of mosquitoes.

  (iv) It is protected from contamination by human and animal wastes.

  (v) It is utilized for benefit of the local population.

  A)
  (i), (ii) and (iii) only done clear
  B)
  (i), (iii) and (v) only done clear
  C)
  (ii), (iii) and (iv) only done clear
  D)
  (i), (ii), (iii), (iv) and (v) done clear
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• question_answer14)
  Two types of animals, P and Q, were placed in a confined research area with sufficient water and plants for the consumption of animals. The given graph is plotted after observing animals over a period of time. Which of the following is incorrect regarding this?
  A)
  Animal P comes under the category of prey. done clear
  B)
  Animal Q comes under the category of predator. done clear
  C)
  Animal Q is carnivore and animal P is herbivore. done clear
  D)
  All of these done clear
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• question_answer15)
  Select the incorrect statement.
  A)
  Economic development is linked to environmental conservation. done clear
  B)
  Sustainable development encourages development for current generation and conservation of resources for future generations. done clear
  C)
  Sustainable development does not consider the view points of stakeholders. done clear
  D)
  Sustainable development is a long, planned and persistent development.  done clear
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• question_answer16)
  The given diagram shows part of a food web. Which of the following represents a pyramid of biomass based on the given food web?
  A)
    done clear
  B)
                                 done clear
  C)
                                       done clear
  D)
  done clear
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• question_answer17)
              The table below lists some information about the trophic levels of a food chain.

  Trophic level	Number of organisms	Energy in the trophic level (arbitrary units)
  P	100	10,000
  Q	1	100
  R	1000	100,000
  S	10	1000

  Which of the following food chains is correct?
  A)
  \[P\to Q\to R\to S\] done clear
  B)
  \[P\to S\to Q\to R\] done clear
  C)
  \[R\to P\to S\to Q\] done clear
  D)
  \[R\to Q\to S\to P\] done clear
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• question_answer18)
  The given figure shows a food web in a forest area. In the forest, large amount of insecticides are blown with wind from a nearby field. What will be the effect on the given food web?
  A)
  Increase in the number of sparrows done clear
  B)
  Increase in the number of frogs done clear
  C)
  Greater reduction in the number of hawks than in the number of caterpillars done clear
  D)
  Greater reduction in the number of caterpillars than in the number of flies done clear
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• question_answer19)
  Study the given food web. Which of the  following would lead to decrease in the water snail population?

  P. Increase in Hydrilla population

  Q. Increase in tadpole population

  R. Decrease in kingfisher population

  S. Increase in dragonfly nymphs population

   
  A)
  Q only done clear
  B)
  P and R only done clear
  C)
  Q, R and S only done clear
  D)
  S only done clear
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• question_answer20)
  The pH level of precipitation at two places X and Y was found to be as shown in graph. Which of the following can you deduce from it?
  A)
  Marble statues at place X can be seen yellowing. done clear
  B)
  Plants at place Y can be seen to have burnt yellow looking leaves. done clear
  C)
  At place X there is higher consumption of fossil fuels. done clear
  D)
  At place Y, renewable energy sources are fastly replacing the use of conventional energy sources. done clear
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