7th Class Science Nutrition in Plants Question Bank

done Nutrition in Plants and Animals Total Questions - 20

• question_answer1)
  Read the given paragraph where few words have been italicized.

  The gall bladder secretes bile juice which is stored in the liver. Bile breaks down fats into tiny droplets that can be digested and absorbed more easily. The digestive juices then act on these tiny droplets to form simpler compounds known as am/no acids and glycerol.

  Select the correct statement regarding this.

   
  A)
  The positions of gall bladder and liver should be interchanged.            done clear
  B)
  Amino acids and glycerol should not be replaced as they are correctly mentioned.                       done clear
  C)
  Fats should be replaced by starch whereas am/no acids should be replaced by peptides.              done clear
  D)
  The positions of fats and glycerol should be interchanged.            done clear
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• question_answer2)

  Priyanka took a destarched potted plant and set up an experiment as shown in the figure. She left the plant in sunlight for few hours and then tested the leaves X and Y for starch. Leaf X did not give starch test while leaf Y showed presence of starch.

  What is proved by this experiment?

     
  A)
  Chlorophyll is necessary for photo-synthesis. done clear
  B)
  Carbon dioxide is necessary for photo- synthesis. done clear
  C)
  Light is necessary for photosynthesis. done clear
  D)
  Oxygen is given out during photo-synthesis. done clear
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• question_answer3)
  Match column I with column II and select the correct option from the codes given below.

  Column I	Column II
  (a) Partial parasitic plant	(i)   Dionaea
  (b) Total parasitic    plant	(ii)  Cuscuta
  (c) Insectivorous plant	(iii)  Mistletoe
  (d) Symbiosis	(iv) Mycorrhiza
  (e) Saprotroph	(v) Pseudomonas

  A)
  (a)-(ii); (b)-(iii); (c)-(i); (d)-(iv); (e)-(v) done clear
  B)
  (a)-(iii); (b)-(ii); (c)-(i); (d)-(iv); (e)-(v) done clear
  C)
  (a)-(i); (b)-(ii); (c)-(iv); (d)-(iii); (e)-(v)          done clear
  D)
  (a)-(iii); (b)-(v); (c)-(ii); (d)-(i); (e)-(iv) done clear
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• question_answer4)
  Refer to the given figure. It illustrates

  (Bread) (Fungal mycellum)

   
  A)
  Autotrophic nutrition done clear
  B)
  Saprotrophic nutrition done clear
  C)
  Parasitic nutrition done clear
  D)
  Symbiotic nutrition. done clear
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• question_answer5)
  Read the given statements and select the correct option.

  Statement 1: The digested food is absorbed mainly in the small intestine.

  Statement 2: The inner wall of small intestine contains numerous finger-like projections called villi.

  A)
  Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1. done clear
  B)
  Both statements 1 and 2 are true but statement 2 in not the correct explanation of statement 1. done clear
  C)
  Statement 1 is true but statement 2 is false. done clear
  D)
  Both statements 1 and 2 are false. done clear
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• question_answer6)
  The given list shows the five steps needed to do a starch test but in a random order.

  (i) Pluck a leaf from the plant.

  (ii) Leave a potted plant out in the Sun for a few hours.

  (iii) Boil the leaf in alcohol.

  (iv) Put the leaf in boiling water for 2 minutes.

  (v) Wash the leaf and then add a few drops of iodine solution over it.

  Select the option with correct order of these steps.
  A)
  (i), (ii), (iii), (iv), (v) done clear
  B)
  (i), (ii), (iv), (iii), (v) done clear
  C)
  (ii), (i), (v), (iv), (iii) done clear
  D)
  (ii), (i), (iv), (iii), (v) done clear
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• question_answer7)
  The given figure shows the movement of food through the oesophagus. This movement is aided by the muscles of the oesophagus in a wave-like action called
  A)
  Diapedesis                      done clear
  B)
  Peristalsis           done clear
  C)
         Rumination        done clear
  D)
         Muscularisation. done clear
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• question_answer8)
  Refer to the given figure of human digestive system, What is X here and what is its function?                
  A)
  Small intestine-Absorbs nutrients from digested food          done clear
  B)
  Stomach - Breaks down food using acids and enzymes done clear
  C)
  Appendix - Has no specific function in the body done clear
  D)
  Rectum - Temporary storage of faeces before being expelled out of the body. done clear
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• question_answer9)
  The given figures show different types of teeth. Which of these is used for biting and cutting of food?
  A)
  X              done clear
  B)
  W done clear
  C)
  Both W and Y   done clear
  D)
  Both Y and Z done clear
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• question_answer10)
  Read the given statements.

  (i) Paramecium has stiff hair-like structures called __ all over its body, which are used for __.

  (ii) Hydra has a number of __ around its mouth that entangle small aquatic animals and kill them with their__ cells.

  (iii) Frog uses its long, sticky __ to catch insects.

  (iv) Mosquito sucks up the blood of animals with its __.

  Select the option which correctly fills the blanks in any two of these statements.
  A)

  (ii) - Cilia, Absorptive;

  (iii) - Hand

    done clear
  B)

  (i) - Tentacles, Ingestion;

  (iv) - Feeding tube

  done clear
  C)

  (i) - Cilia, Ingestion;

  (ii) - Tentacles, Stinging

    done clear
  D)

  (iii) - Tongue;

  (iv) - Pseudopodia

    done clear
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• question_answer11)
  The given figure shows human digestive system. In which labelled part digestion   of fat is completed?        
  A)
  P                                  done clear
  B)
  R                      done clear
  C)
  S                      done clear
  D)
         Q                                 done clear
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• question_answer12)
  In an experiment demonstrating the evolution of oxygen in Hydrilla, sodium bicarbonate is added to water in the experimental set-up. What would happen if all other conditions are favourable?                         
  A)
  Amount of oxygen evolved decreases as carbon dioxide in water is absorbed by sodium bicarbonate. done clear
  B)
  Amount of oxygen evolved decreases as the availability of carbon dioxide increases.                         done clear
  C)
  Amount of oxygen evolved increases as the availability of carbon dioxide increases.                         done clear
  D)
  Amount of oxygen evolved increases as carbon dioxide in water is absorbed by sodium bicarbonate. done clear
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• question_answer13)
  Most crops require a lot of nitrogen to synthesise the proteins. The bacterium Rhizobium helps some of the crops to get nitrogen. Which of the following statements is incorrect for Rhizobium?
  A)
  It converts atmospheric nitrogen into a soluble form that the plants can absorb from soil.                   done clear
  B)
  It can make its own food.          done clear
  C)
  (c) It lives in the root nodules of leguminous plants like gram, pea, moong etc. done clear
  D)
  (d) Leguminous plants provide food and shelter to Rhizobium.              done clear
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• question_answer14)
  Which enzymes are likely to act on the baked potatoes eaten by a man, starting from the mouth as they move down the alimentary canal?                    
  A)
  Salivary amylase \[\to \] pancreatic amy- lase \[\to \]Disaccharidases done clear
  B)
  Pancreatic amylase \[\to \] salivary amylase \[\to \]Lipase done clear
  C)
  Salivary maltase \[\to \] Lipase \[\to \] Trypsinogen done clear
  D)
  Salivary maltase \[\to \] pancreatic amylase Trypsin done clear
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• question_answer15)
  The steps of the digestive process are listed below in a random order.

  (i) Water and some salts from undigested food are absorbed.

  (ii) Food is liquefied; breakdown of proteins begins.

  (iii) Food is moistened; breakdown of starch begins.

  (iv) Proteins, carbohydrates, and fats break down; nutrients are majorly absorbed into the bloodstream.

  Select the option that gives the correct order of these events as food passes through the human digestive tract.
  A)
  (ii), (iv), (i), (iii)    done clear
  B)
  (iv), (ii), (iii), (i) done clear
  C)
  (i), (iii), (ii), (iv)    done clear
  D)
  (iii), (ii), (iv), (i) done clear
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• question_answer16)

  Direction:  Refer to the given diagram showing, a part of human alimentary canal and answer the following questions,

  Which of the labelled structures removes most water from the undigested food?
  A)
  X                      done clear
  B)
  Y                      done clear
  C)
  Z                      done clear
  D)
  None of these done clear
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• question_answer17)

  Direction:  Refer to the given diagram showing, a part of human alimentary canal and answer the following questions,

  Which of the following statements is/are correct for the structure labelled Z?
  A)
  Absorption of digested food takes place here. done clear
  B)
  The undigested food is passed out to the structure Y. done clear
  C)
  It has very large surface area due to presence of numerous villi. done clear
  D)
  All of these done clear
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• question_answer18)
  Which graph shows the effect of temperature on the rate of photosynthesis of the aquatic plants such as Elodea?
  A)
    done clear
  B)
  done clear
  C)
         done clear
  D)
           done clear
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• question_answer19)

  The given diagram shows a destarched, variegated leaf, partly covered by black paper. The plant is placed in bright light for several hours.

  Four discs are then cut from the leaf in the positions shown and are tested for starch. Which discs do/does not contain starch?

                                                                 
  A)
  1, 3 and 4 only   done clear
  B)
  1 and 2 only      done clear
  C)
  2 only               done clear
  D)
  3 and 4 only done clear
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• question_answer20)

  Refer to the given graph which shows the effect of pH on the activities of three enzymes, X, Y and Z.

  Which of the following are the possible locations in the alimentary canal of man where the three enzymes can be found?

     
  A)

  X	Y	Z
  Small intestine	Mouth	Stomach

                  done clear
  B)

  X	Y	Z
  Mouth	Stomach	Small intestine

                  done clear
  C)

  X	Y	Z
  Stomach	Small intestine	Mouth

                  done clear
  D)

  X	Y	Z
  Stomach	Mouth	Small intestine

              done clear
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