7th Class Science Nutrition in Plants Question Bank

done Nutrition in Plants Total Questions - 40

• question_answer1)
  Which of the following is insectivorous?
  A)
  Mushroom                         done clear
  B)
  Cuscuta                done clear
  C)
         Mucor                   done clear
  D)
         Nepenthes done clear
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• question_answer2)
  Which of the following statements is true about croton plants?
  A)
   Croton plants do not contain chlorophyll. done clear
  B)
   Croton plants are dark red in colour. Hence they depend on other plants for food. done clear
  C)
   Croton plants have chlorophyll but it is hidden by dark red colour pigments. done clear
  D)
   Croton plants are parasites done clear
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• question_answer3)
  Which of the following statement is/are NOT true about photosynthesis?

  P - Carbon dioxide is essential for photosynthesis to take place.

  Q - The products of photosynthesis are simple sugars.

  R - Photosynthesis occurs in the green leaves of plants.

  S - Sunlight is not used as an energy source by plants to make food during photosynthesis.

  A)
  P and S only done clear
  B)
  Q, R and S only done clear
  C)
  P, Q and R only done clear
  D)
  P, Q, R and S done clear
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• question_answer4)
  What is the aim of the given experiment?
  A)
   To show that air is a basic need of plants. done clear
  B)
   To show that food is a basic need of plants. done clear
  C)
   To show that water is a basic need of plants. done clear
  D)
   To show that sunlight is a basic need of plants. done clear
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• question_answer5)
  The equation given below represents photosynthesis. \[\text{X+Water}\xrightarrow[\text{Chlorophyll}]{\text{Sunlight}}\text{Glucose+Y}\] Which of the following is represented by X and Y in the given equation?
  A)
   X - Carbon dioxide, Y- Oxygen done clear
  B)
   X-Oxygen, Y-Carbon done clear
  C)
   X - Carbon dioxide, Y- Hydrogen done clear
  D)
   X - Oxygen, Y - Carbon dioxide done clear
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• question_answer6)
  How does photosynthesis help to maintain the percentage of oxygen and carbon dioxide in the atmosphere?
  A)
   By giving off carbon dioxide and absorbing oxygen. done clear
  B)
   By giving off oxygen and absorbing carbon dioxide. done clear
  C)
   By releasing oxygen and carbon dioxide. done clear
  D)
   By absorbing oxygen and carbon dioxide. done clear
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• question_answer7)
  Which part of the leaf controls the rate of loss of water to the air?
  A)
   Midrib                                  done clear
  B)
   Stomata              done clear
  C)
          Vascular bundles done clear
  D)
         Veins done clear
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• question_answer8)
  What role does the insect play in the insectivorous plant?
  A)
   Fertilization process. done clear
  B)
   Provides nutrients to the plant. done clear
  C)
   Dispersal of seeds. done clear
  D)
   Provides carbon dioxide to the plant. done clear
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• question_answer9)
  What is the role of the bacteria in leguminous plants?
  A)
   Convert oxides of nitrogen into soil nitrates. done clear
  B)
   Convert atmospheric nitrogen gas into soil nitrates. done clear
  C)
   Convert soil nitrates into gaseous nitrogen. done clear
  D)
   Convert plant proteins into ammonia. done clear
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• question_answer10)
  Which of the following is true about parasitic plants?  

  (i) They absorb food from their host.

  (ii) They compete with the host for sunlight.

  (iii) They kill the host plant eventually.

     
  A)
    (i) and (ii) only                 done clear
  B)
   (i) and (iii) only done clear
  C)
   (ii) and (iii) only done clear
  D)
  (i), (ii) and (iii) done clear
  View Solution play_arrow

• question_answer11)
  Symbiosis is the phenomenon in which two different kinds of organisms pool together their nutritional requirements. Which of the following options represents such association?
  A)
                                                                              done clear
  B)
  done clear
  C)
                                                                                   done clear
  D)
  done clear
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• question_answer12)
  Which of the following types of nutrition is exhibited by the figure given below?
  A)
   Autotrophic nutrition. done clear
  B)
   Saprophytic nutrition. done clear
  C)
   Parasitic nutrition. done clear
  D)
   Symbiotic nutrition. done clear
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• question_answer13)
  Which labelled arrow represents the movement of water?
  A)
   P                                            done clear
  B)
   Q                            done clear
  C)
   R                            done clear
  D)
          S done clear
  View Solution play_arrow

• question_answer14)
  Which of the following words can complete the given table?

  Organisms	Mode of nutrition
  Cuscuta	P
  Q	Insectivorous
  R	Saprophytic

  A)
   P-Parasitic; Q-Mosquito; R-Algae done clear
  B)
   P-Autotrophic; Q-Mushroom; R-Yeast done clear
  C)
   P-Parasitic; Q-Nepenthes; R-Mould done clear
  D)
   P-Autotrophic; Q-Mushroom; R-Yeast done clear
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• question_answer15)
  Which of the following is the characteristic feature of organisms exhibiting symbiosis?
  A)
   Organism feeds on dead and decaying organic matter. done clear
  B)
   Organism traps and feeds on insects. done clear
  C)
   Two organisms live together and get benefitted from each other. done clear
  D)
   One organism grows as parasite on the body of other. done clear
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• question_answer16)
  Where does most of the transpiration take place in the given figure?
  A)
   P                                            done clear
  B)
   R                            done clear
  C)
   Q                            done clear
  D)
          S done clear
  View Solution play_arrow

• question_answer17)
  Which structure in a green plant controls the opening and closing of stomata?
  A)
   Guard cell                           done clear
  B)
   Mesophyll          done clear
  C)
          Phloem               done clear
  D)
          Xylem done clear
  View Solution play_arrow

• question_answer18)
  What is the principal source of energy input to biological systems?
  A)
   Carbohydrates from plants. done clear
  B)
   Light from the sun. done clear
  C)
   Nutrients from the soil. done clear
  D)
   Oxygen from the air. done clear
  View Solution play_arrow

• question_answer19)
  How does most carbon dioxide reach into the photosynthesizing cells of a green leaf?
  A)
   Through the hypodermis of the leaf. done clear
  B)
   Diffusion through the stomata of the leaf. done clear
  C)
   Movement through the phloem. done clear
  D)
   Movement through the xylem. done clear
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• question_answer20)
  Which of the following organisms are found as slimy, green patches on ponds or on stagnant water?
  A)
   Fungi                                    done clear
  B)
   Bryophytes done clear
  C)
   Bacteria               done clear
  D)
          Algae done clear
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• question_answer21)
  Leaves are green due to the presence of a green coloured pigment called chlorophyll. Which of the following is the main function of chlorophyll?
  A)
   To absorb carbon dioxide from the atmosphere. done clear
  B)
   To absorb water and minerals from the soil. done clear
  C)
   To give greenish colour to the leaves. done clear
  D)
   To trap sunlight. done clear
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• question_answer22)
  Fungi does not contain chlorophyll to synthesize their food. Then how do they get their food?
  A)
   From dead and decaying plants. done clear
  B)
   By photosynthesis. done clear
  C)
   By eating small insects which come near it. done clear
  D)
   From the water we pour near it. done clear
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• question_answer23)
  A plant was kept in a dark room for a week. When its leaves were tested with iodine solution, it did not show the presence of starch. From this experiment we can conclude that ____ is essential for photosynthesis.
  A)
   Sunlight                               done clear
  B)
   Oxygen done clear
  C)
   Carbondioxide done clear
  D)
          Water done clear
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• question_answer24)
  What is the function of root nodules in leguminous plants?
  A)
   Store food done clear
  B)
   Provide extra strength done clear
  C)
   Perform photosynthesis done clear
  D)
   Give shelter to bacteria done clear
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• question_answer25)
  Which function is performed by the bacteria present in the root nodules of leguminous plants?
  A)
   To store food. done clear
  B)
   To perform photosynthesis. done clear
  C)
   To fix the atmospheric nitrogen. done clear
  D)
   To simplify the complex minerals present in the soil. done clear
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• question_answer26)
  Which of the following is present in root nodules of leguminous plants that fixes the atmospheric nitrogen?
  A)
   Rhizobium bacteria done clear
  B)
   Blue-green algae done clear
  C)
   Nitrifying bacteria done clear
  D)
                   Paramoecium done clear
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• question_answer27)
  In nepenthes plant, leaves are modified into which of the following structures?
  A)
   Leaf tendrils for mechanical support. done clear
  B)
   Spines to reduce the loss of water. done clear
  C)
   Pitchers to trap the insects. done clear
  D)
   Fleshy leaves to store the food and water. done clear
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• question_answer28)
  Which statement is true about parasitic plants?
  A)
   Organisms which prepare food on their own. done clear
  B)
   Organisms which break glucose into alcohol and carbon dioxide. done clear
  C)
   Organisms which draw nutrition from living tissues of other plants. done clear
  D)
   Plants which kill insects for their food. done clear
  View Solution play_arrow

• question_answer29)
  Which of the following is an insectivorous plant?
  A)
   Sundew                              done clear
  B)
   Lichen  done clear
  C)
   Fern                      done clear
  D)
          Mould done clear
  View Solution play_arrow

• question_answer30)
  Which statement describes symbiosis?
  A)
   A mutually beneficial relationship between two organisms. done clear
  B)
   Interdependence between two organisms. done clear
  C)
   Phenomenon in which carnivorous plants kill insects as well as prepare food through photosynthesis. done clear
  D)
   Dependence on another organism for its habitat. done clear
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• question_answer31)
  Carbohydrates, the most abundant biomolecules on Earth are produced by which of the following organisms?
  A)
   Some bacteria, algae and green plant cells. done clear
  B)
   All bacteria, fungi and algae. done clear
  C)
   Fungi, algae and green plant cells. done clear
  D)
   Viruses, fungi and bacteria. done clear
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• question_answer32)
  Which process causes oxygen to enter the atmosphere?
  A)
   Fat metabolism                done clear
  B)
   Respiration        done clear
  C)
          Photosynthesis   done clear
  D)
          All of these done clear
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• question_answer33)
  Which of the following statements is true about the importance of photo-synthesis?
  A)
   Source of food for all living organisms. done clear
  B)
   It converts atmospheric carbon dioxide to glucose. done clear
  C)
   It provides nourishment and helps in the growth and development of plants. done clear
  D)
   All of these done clear
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• question_answer34)
  Which structure in a green plant transports the synthesized food from leaves to all other parts of the plant body?
  A)
   Guard cell                           done clear
  B)
   Mesophyll          done clear
  C)
          Phloem               done clear
  D)
          Xylem done clear
  View Solution play_arrow

• question_answer35)
  What is the function of the bacteria present in the roots of bean plants
  A)
   Breaks down nitrates into nitrogen. done clear
  B)
   Converts ammonium salts into nitrogen. done clear
  C)
   Converts nitrogen into nitrates. done clear
  D)
   Converts nitrates into ammonium compounds. done clear
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• question_answer36)
  Amarbel is an example of
  A)
   autotroph.         done clear
  B)
   parasite.             done clear
  C)
          saprotroph.    done clear
  D)
          host. done clear
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• question_answer37)
  Lichens are examples of which of the following types?
  A)
   Symbiotic algae and fungi. done clear
  B)
   Carnivorous plants. done clear
  C)
   Animals which can perform photosynthesis. done clear
  D)
   Parasitic algae. done clear
  View Solution play_arrow

• question_answer38)
  Where does most of the water for photosynthesis come from?
  A)
   From the soil through the roots of the plant. done clear
  B)
   From air through the tiny pores in the leaf. done clear
  C)
   As a result of respiration within the leaf. done clear
  D)
   From water vapour in the air. done clear
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• question_answer39)
  Which of these plants trap and feed on insects?
  A)
   Cuscuta                               done clear
  B)
   China rose          done clear
  C)
          Pitcher plant  done clear
  D)
          Rose done clear
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• question_answer40)
  The figure given below shows part of the carbon cycle.                 What is process R?
  A)
           Decomposition done clear
  B)
   Respiration        done clear
  C)
                          Photosynthesis done clear
  D)
          Nutrition done clear
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