6th Class Science The Living World / जीव जगत Question Bank

done The World of Living Total Questions - 20

• question_answer1)
  Read the following statements and select the option that correctly identifies true (T) and false (F) ones.

  (i) The number of petals and sepals in a flower is always equal.

  (ii) Roots absorb water and minerals from the soil.

  (iii) Stamen forms the innermost whorl of a flower.

  (iv) Petiole is the short stalk attached to the leaf.

  (v) Calyx and corolla form essential whorls of the plant.

  A)

  (i)	(ii)	(iii)	(iv)	(v)
  T	T	F	T	F

    done clear
  B)

  (i)	(ii)	(iii)	(iv)	(v)
  F	T	F	T	F

    done clear
  C)

  (i)	(ii)	(iii)	(iv)	(v)
  F	T	T	T	F

    done clear
  D)

  (i)	(ii)	(iii)	(iv)	(v)
  T	T	F	F	T

    done clear
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• question_answer2)
  Which among these children made an incorrect statement?                 
  A)
  done clear
  B)
  done clear
  C)
  done clear
  D)
  done clear
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• question_answer3)
  Select the incorrect match.

  Type of vertebrae	No. of vertebrae
  (i)  Cervical vertebrae	7
  (ii) Thoracic vertebrae	12
  (iii) Lumbar vertebrae	4
  (iv) Sacral vertebrae	5
  (v) Caudal vertebrae	5

  A)
  (iii) and (v) only done clear
  B)
  (ii), (iii) and (iv) only done clear
  C)
  (i), (iii) and (v) only done clear
  D)
  (ii) and (v) only done clear
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• question_answer4)
  The given graph represents how three different living organisms (X, Y and Z) cope with the external environmental conditions. Study the graph and select the correct option regarding X, Y and Z.                        
  A)
  X could be a mammal. done clear
  B)
  Y could be a bird. done clear
  C)
  Z could be a mammal. done clear
  D)
  X could be a bird. done clear
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• question_answer5)

  The given graph shows temperature gradient through different biomes of Earth (P, Q, R and S).

  Refer to the given graph and select the incorrect option regarding P, Q, R and S.

       
  A)
  Plants inhabiting S may have photosynthetic stems and leaves reduced to spines.               done clear
  B)
  Animals inhabiting R possess thick layer of subcutaneous fat.           done clear
  C)
  Animals inhabiting P show arboreal adaptations and often use camouflage and startling coloration for protection against enemies.                  done clear
  D)
  Plants inhabiting Q have large flat leaves and animals inhabiting Q excrete concentrated urine and are nocturnal.                           done clear
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• question_answer6)
  Match column I with column II and select the correct option from the codes given below.                              

  Column I	Column II
  (a) Hinge joint	(i)   Neck joint
  (b) Gliding joint	(ii) Hip joint
  (c) Pivot joint	(iii) Knee joint
  (d) Ball and socket joint	(iv) Wrist joint

  A)
  (a) - (iii), (b) - (iv), (c) - (i), (d) - (ii)   done clear
  B)
  (a) - (iv), (b) - (i), (c) - (iii), (d) - (ii) done clear
  C)
  (a) - (i), (b) - (ii), (c) - (iv), (d) - (iii) done clear
  D)
  (a) - (ii), (b) - (iii), (c) - (i), (d) - (iv) done clear
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• question_answer7)
  Read the following statements (i)-(v), each with one or two blanks.

  (i) ___(a)___ have liquid skeletons.

  (ii) The last ___(b)___ pairs of ribcage bones that are not joined to the breast bone are called ___(c)___ .

  (iii) The longest bone of human body is ___(d)___.

  (iv) ___(e)___ is strong, flexible band that holds ;bones together at the joints.

  (v) ___(f)___ is a smooth elastic tissue that covers and protects the ends of long bones at the joints.

  Which of the following options correctly fills any two of these blanks?
  A)
  (a)-Earthworm, (d)-Humerus done clear
  B)
  (e)-Ligament, (f)-Cartilage done clear
  C)
  (b)-Four, (c)-Floating ribs done clear
  D)
  (e)-Tendon, (f)-Ligament done clear
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• question_answer8)
  The structure marked as X in the given figure is not involved in ____.
  A)
  Gaseous exchange during photosynthesis done clear
  B)
  Gaseous exchange during respiration done clear
  C)
  Evaporation of water during transpiration done clear
  D)
  None of these done clear
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• question_answer9)
  Refer to the given figures X and Y; and select the incorrect statement regarding them.
  A)
  In X, stem is modified to form tendril whereas in Y leaf is modified to form tendril. done clear
  B)
  Both X and Y are weak-stemmed plants.                                   done clear
  C)
  X type tendrils are also found in passion flower whereas Y type tendrils are also found in Gloriosa.          done clear
  D)
  In X, leaf is modified to form tendril whereas in Y, stem is modified to form tendril.                       done clear
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• question_answer10)
  The given figure shows an example of____.
  A)
  Phototropism          done clear
  B)
  Geotropism      done clear
  C)
         Autotropism      done clear
  D)
  Photosynthesis       done clear
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• question_answer11)
  Which of the following statements is correct?
  A)
  The soft substance present inside the bones is called bone marrow.       done clear
  B)
  Pivot joint allows the maximum movement in all planes whereas hinge joint allows the least movement in one plane only.  done clear
  C)
                The only movable bone in skull is the upper jaw bone. done clear
  D)
  Snakes have hollow bones and birds have flexible backbones. done clear
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• question_answer12)
  Which of the following statements hold true for the root system shown in the given figure?                                  

  (i) It is a fibrous root system.

  (ii) The branches that arise from the main root are called fibrous roots.

  (iii) It \s a tap root system.

  (iv) Examples of this type of root system are pea, tulsi, radish, carrot and turnip.

  A)
  (i) and (iii) only done clear
  B)
  (ii) and (iv) only done clear
  C)
  (iii) and (iv) only done clear
  D)
  (ii) and (iii) only done clear
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• question_answer13)
  The given table shows some characteristics of herbs, shrubs and trees. Which of the given points is/are incorrect?

  	Features	Herbs	Shrubs	Trees
  (i)	Size	Very small, usually less than 1 m high	Medium sized, usually 1-3 m high	Tall, generally more  than 3 m high
  (ii)	Nature of stem	Green and tender stems with few branches	Hard and very thick stem with branches          on the upper part of the stem	Hard stem but not very thick; branches arise near the base of the stem
  (iii)	Examples	Grass, tomato, wheat, mint	Hibiscus, lemon, rose,            jasmine	Gulmohar, neem, peepal, mango

  A)
  (i) only             done clear
  B)
  (ii) only          done clear
  C)
                     (iii) only        done clear
  D)
         (ii) and (iii) only done clear
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• question_answer14)

  What is a common character of the above shown animals?

                        
  A)
  They all live in water.               done clear
  B)
  They all lack backbone.            done clear
  C)
  They all have scales on their body. done clear
  D)
  They all lay eggs to reproduce. done clear
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• question_answer15)
  Leaves may be simple or compound. Which of the given figures show(s) compound leaves?
  A)
  a only                             done clear
  B)
  b, c and d only done clear
  C)
                      a and d only     done clear
  D)
                   All of these                        done clear
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• question_answer16)

  Small populations of three types of organisms; X, Y and Z were kept in captivity. Plenty of plants were present in that area.   The change in the population of these organisms with time was plotted in the graph as shown here.

  Which of the following conclusion is incorrect regarding their eating habits?

   
  A)
  X could be a carnivore that feeds on Z but not on Y.                    done clear
  B)
  Both X and Y could be herbivores and Z could be a carnivore whose population declines as it does not prey on both X and Y.             done clear
  C)
  If X and Y are herbivores, then X has higher reproductive potential than Y. done clear
  D)
  None of these               done clear
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• question_answer17)
  Refer to the given paragraph.

  The two main types of root are X and Y. X roots are mostly found in plants having leaves with reticulate venation, while Y roots are mostly found in plants having leaves with parallel venation. Select the incorrect statement regarding X and Y.

   
  A)
  Radish, turnip and carrot are modifications of X. done clear
  B)
  X is found in gram while Y is found in barley. done clear
  C)
  X spreads horizontally hence cannot provide strong anchorage whereas Y penetrates very deep into the soil hence provides strong anchorage. done clear
  D)
  In Y, primary root is short-lived while X has persistent primary root. done clear
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• question_answer18)
  Refer to the given paragraph and answer the following question.

  Plant P is the only source of food for the caterpillars of a butterfly species, Plant P depends on the adults of the butterfly species Q for pollination. In fact, animal Q is the only pollinator of plant P in nature. Animal R feeds exclusively on the caterpillars of the butterfly species, Q. Animal R in turn is the prey of animal S. Which of the following is likely to happen if animal S is hunted to extinction?

   
  A)
  Animal R will continuously feed on animal Q which may lead to coextinction of both P and Q with time. done clear
  B)
  The populations of both animals Q and R will increase, however the population of plant P will decrease with time. done clear
  C)
  Population of animal R will increase while population of animal Q will decrease with time. done clear
  D)
  Both (A) and (C) done clear
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• question_answer19)
  Refer to the given figures of machines P, Q, Rand S which represent different joints of our body. Identify the joints according to movement of these machines and select the correct option.
  A)
  P type of joint is found between the upper arm bone (humerus) and shoulder.                        done clear
  B)
  Q type of joint is present in our elbow and knee and allows movement in only one plane.                     done clear
  C)
  S type of joint allows side to side as well as backward and forward movement, e.g. ankle and wrist joints. done clear
  D)
  R type of Joint allows the highest freedom of motion e.g., hip joint. done clear
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• question_answer20)
  Refer to the given Venn diagram and select the incorrect statement regarding P, Q and R.
  A)
  R has three pairs of jointed legs which help it to walk, run and climb. done clear
  B)
  Q has paired and unpaired fins that, help in movement in water. done clear
  C)
  P has special air sacs connected to the lungs which aid in respiration process. done clear
  D)
  Q is a shelled animal that possesses a muscular structure called foot which produces a series of wave like movements. done clear
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