Question Pool Windows of Knowledge

Windows of Knowledge - SAMAGRA Question Pool & Answers | Class 10 English Medium

Kerala Syllabus SAMAGRA SCERT SAMAGRA Question Pool for Class 10 English Medium Biology Windows of Knowledge

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Qn 1.

Select suitable ones from the following and arrange them in the table given below.

a) Helps to detect colours.

b) Night Blindness

c) Rhodopsin

d) Helps in bright light vision

e) Photopsin

f) Helps in dim light vision

  • Answer)

     

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    Qn 2.

    Arrange columns B and C according to column A.

    A B C
    Presbyopia Lens becomes opaque Laser surgery
    Glaucoma Loses the ability of lens to change the curvature of the lens. Lens replacement
    Cataract Eye pressure increases Use spectacles with convex lens

     

    • Answer)

       

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      Qn 4.

      Find the given wordpair relationship and fill.

      ear ossicles : transmits the vibrations of tympananum to the internal ear

      eustatachian tube : .............................................

       



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      Qn 5.

      We can see nearby and distant objects clearly.

      a) The ability of the eye to adjust the focal length is called -------------- .

      b) What change occurs in the curvature of lens while viewing near objects?

      c) How the above change in the curvature of lens is accomplished?

       



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      Qn 6.

      From the following, select the correct statements.

      1. Semicircular canal and vestibule help in body balancing.

      2. Perilymph is seen in the membraneous labyrinth of inner ear.

      3. Organ of Corti helps in maintaining body balance.

      4. The hair cells in semicircular canals helps maintains body balance.

       



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      Qn 7.

      Base on the hints given, complete the column B in accordance with column A.

      Eye Defect  
      Myopia  
      Hypermetropia  
      Night Blindness  
      Glaucoma  

       

       

      • Answer)
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        Qn 8.

        The activities related to the sensation of taste is given below. Arrange them in the correct order.

        1. Impulses are generated.

        2. Taste receptors are stimulated.

        3. Impulses reach the brain.

        4. Experiences the sense of taste.

        5. Tatste molecules dissolve in saliva.

         



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        Qn 9.

        Answer the following questions related to the sensation of tatste.

        1. Where do the chemoreceptors related to the sense of tastes located?

        2. Give the significances of taste buds.3. Name the tastes detected by the chemoreceptors in different taste bu



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        Qn 10.

        From the following box, select the the parts seen in the sclera, choroid and retina.

        Conjunctiva, Blind spot, Cornea, Yellow spot, Pupil

         



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        Qn 11.

        The possibility of occurrence of night blindness in Vitamin A deficient children is high. Based on this statement, answer the following questions.

        a) How does the deficiency of vitamin A relate to night blindness?

        b) Name any other disease caused by vitamin A deficiency.



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        Qn 12.

        Analyse the following figure and answer the following questions.

        a) Identify the parts from the vestibular nerve receives impulses?

        b) Name the location of the receptors that create messages to the auditory nerve?

         



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        Qn 13.

        Select the correct pair from the following.

        a) The vibration of stapes : The movement of fluid in cochlea.

        b) The hair cells in the basilar membrane: Maintenance of body balance.

         



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        Qn 14.

        Analyse the following table and make suitable pairs based on the parts and their functions.

         

        Part

        Function

        1

        Optic nerve

        The size of this aperture increases and decreases depending on the intensity of light.

        2

        Pupil

        The point of maximum visual clarity.

        3

        Conjunctiva

        Tha part that refracts light rays to focus on the retina.

        4

        Yellow spot

        Alters the curvature of lens.

        5

        Ciliary nuscles

        Covers and protects the front part of

        sclera except the cornea.

        6

        Cornea

        Transmits impulses from photoreceptors

        to the visual centre in the brain

        • Answer)
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          Qn 15.

          Compare the activities in identifying taste and smell and complete the table.



          a) …………… dissolves in mucus.

          Food particles dissolve in saliva.

          Olfactory receptors are stimulated.

          b) ……………. are stimulated.

          Impulses are formed.

          Impulses are formed.

          c) impulses reach the brain through the ……………. nerve.

          Impulses reach the d) …………. nerve.

          e) Senses smell.

          Senses taste.



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        Qn 16.

        The major parts related to the process of hearing is given. Prepare a flow chart by arranging them from cerebrum to oval window.

        a) Auditory nerve b) Endolymph c) Hair cells d) Oval window e) Cerebrum f) Basilar membrane.

         



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        Qn 17.

        From the following, find the reason for excess pressure inside the eye in Glaucoma.

        a) The pressure in the eye exerted by the unabsorbed blood.

        b) The defect in the formation of aqueous fluid.

        c) The defect in the reabsorption of aquesous fluid.d) The excess vitreous fluid.

         



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        Qn 18.

        Certain parts related to the process of hearing are given below. Write the major functions of each.

        a) Ear ossicles.

        b) Eustachain tube

        c) Round window



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        Qn 19.

        Write reasons for each of the following statements.

        a) We are able to view objects in three dimensional form.

        b) Vitamin A is needed for the resynthesis of rhodiopsin.c) The disease glaucoma can be cured by laser treatment.



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        Qn 20.

        Arrange the following items related to the process of colour vision in a flow chart suitably.

        • Photopsin is dissociated.

        • Cone cells are stimulated in the presence of light.

        • Impulses are generated.

        • Form retinal and opsin.

        • Forms the experience of vision.

        • Impulses reach the brain through the optic nerve.

         



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        Qn 21.

        Complete the following table related to photoreceptors. 

        Characteristics

        Rod cells

        Cone cells

        Shape

         

         

        Pigment

         

         

        Function

         

         

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          Qn 22.

          Copy the following figure and label the parts based on the hints.

          a) Part where photoreceptors are seen.

          b) The opening of the eye in the middle of the iris.

          c) The part that focuses light rays in the retina.

           



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          Qn 23.

          Analyse the following figure and answer the questions.

          a) Identify the figure.

          b) Name the vitamin necessary for the pigment in this cell.

           



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          Qn 24.

          Find the word pair and fill.

          The opaque of lens: Cataract

          …………………..: Xeropthalmia



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          Qn 25.

          Complete the following illustration.



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          Qn 26.

          Correct the errors if any in the following statements related to the sensation of taste and arrange them in correct order.

          1. Food particles dissolve in saliva.

          2. Impulses reach the cerebrum.

          3. Experiences the sense of taste.

          4. Impulses form.

          5. Chemo-receptors are stimulated.



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          Qn 27.

          Identify the errors and correct if any in the following flow chart.

          1. Impulse is formed.

          2. Maintains body balance.

          3. Movement of the fluid in the vestibular apparatus.

          4. Impulses reach the cerebellum through the vestibular nerve.

          5. Body movements.

          6. The movement of the hair cells.





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          Qn 28.

          Observe the given figure and answer the following questions.

          a) Identify the parts that maintain body balance. Give their collective name.

          b) To which part of the brain does “C” conveys messages?



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          Qn 29.

          Compare the activities in identifying taste and smell and complete the table.



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          Qn 30.

          Complete the following table related to the structure of the eye.

          Part On viewing nearby objects On viewing distant object
          Ciliary Muscles    
          Ligaments    
          The curvature of lens    
          Focal distance    

           

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            Qn 31.

            Analyze the following figure and answer the questions given below.

            a) The part where sound receptors are located.

            b) The part that maintains the pressure on both sides of the ear drum.

            c) The part that leads sound waves to auditory canal.



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            Qn 32.

            Analyse the following figure and answer the questions.

            a) Identify the picture and write the name of the bone indicated 'A'.

            b) Name the membrane seen attached to ‘B’.

             



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            Qn 33.

            From the following statements, select the correct one.

            a) Prolonged night blindness leads to xerophthalmia.

            b) Many blood vessels are seen in Retina.

            c) Sound receptors are found in Organ of Corti.

            d) Jacobson's organs are located in the tongue of snake.

             



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            Qn 34.

            Using the following hints, prepare a flowchart showing the processes included in the sensation of smell.

            a) Impulses reach the cerebrum through the gustatory nerve.

            b) Smell particles dissolves in the mucus.

            c) Gustatory receptors are stimulated.

            d) Smell particles dissolves in the air.

            e) Reaches the nasal cavity through inspiration.

            f) Form impulses.

             



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            Qn 35.

            The hair cells in the internal ear is seen in:

            a) In the cochlea only.

            b) In the vestibule only.

            c) In the semicircular canals only.

            d) In the vestibular apparatus and cochlea.



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            Qn 36.

            The following table shows the parts related to the structure of human ear. Identify the missing words.

             

            I

            II

            III

            Ear

            External ear

            Ear pinna

            A …………….

             

            Middle ear

            Ear drum

            B …………….

            Eustachian tube

             

            Internal ear

            Semicircular canals

            C …………….

            D …………….

            Auditory nerve.


             



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            Qn 37.

            Arrange the columns B and C in accordance with column A.

            A

            B

            C

            i) Myopia

            Bacteria

            Spectacles with concave lens

            ii)Cataract

            Increasing pressure in the eye

            Spectacles with convex lens

            iii)Glaucoma

            Opaqueness of lens

            Lens replacement surgery

            iv)Conjunctivitis

            Short eye ball

            Laser surgery

             

            Long eye ball

            Maintain personal hygiene.

             

            • Answer)

               

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              Qn 38.
              From the following, select the correct  statements.
              a) There is difference in the aminoacids of the opsin molecules of the three types of cone cells. 
              b) The opaqueness of cornea is a symptom of cataract.
              c) The eustachian tube protects the ear drum.
              d) Perilymph is the fluid present inside the membraneous labyrinth of internal ear.
              e) The sound receptors are present in the organ of Corti.

               



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              Qn 39.

              Select the correct pair from the following.

              1. Night blindness: The condition in which one is unable to detect colour.

              2. Glaucoma- The excess pressure experienced in the eye.

              3. ‌Conjunctivitis- The opaqueness of eye lens.

              4. Xerophthalmia- No vision in in dim light



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              Qn 40.

              Complete the follwoing flow chart.



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              Qn 41.

              Based on the model, make pairs using the items from the box.

              Model: Shark- Lateral line.

              Planaria, Ommatidium, Eye spot, Jacobson's organ, Shark, House fly, Snake, Lateral line.



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              Qn 42.

              From the following statements, identify the correct one.

              I) Touch receptors are not uniformly distributed all over the skin.

              ii) Smell is experienced when the impulses from smell receptors reach the cerebellum.

              ‌iii) The tongue has taste buds to feel sweat, salt, sour, bitter and umami tastes.

              iv) The impulses of hearing are conveyed to cerebrum through the vestibular nerve.


               a) i, ii are correct b) i, iii are correct c) i, iv are correct d) ii, ivare correct



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              Qn 43.

              Complete the flowchart related to the process of hearing.



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              Qn 44.

              Based on the curvature of the eye lens, identify the pictures showing the changes on viewing the distant and nearby objects.



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              Qn 45.

              A person heard a ringtone from his mobile phone, while viewing cricket  match. Suddenly he looked at his mobile. What changes occured in his eye lense and related muscles?

               



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              Qn 46.

              Fill the blank based on the relationship between the words in the first pair.

              a)Optic lens becomes opaque : Cataract

              Cornea becomes opaque : ...............

              b)Cerebrospinal fluid : Brain tissues

              .............................. : Eye tissues

              c)Auditory nerve : Hearing

              ........................ : Body balance

               



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              Qn 47.

              Deficiency of Rhodopsin leads to Night blindness and deficiency of Photopsin leads to colour blindness. Evaluate this statement and justify your opinion.

               



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              Qn 48.

              A person is suffering from dryness of his cornea. Formulate any three hypothesis  on the circumstamces that may lead to this condition.



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              Qn 49.

              Observe the following figures and answer the questions.

              ‌a) Identify the picture A and B.

              b) Deficiency of the pigment of which cell causes night blindness?

              c) The defect of which cell causes color blindness.



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              Qn 50.

              Pick the odd one from the following and justify.

              a.Organ of Corti, b.Malleus, c.Umami, d.Incus

               



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              Qn 51.

              Some of the parts related to the process of hearing are given beow. Write the major function of each.

              a) Ear oscicles

              b) Eustachian tube

              c) Round window



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              Qn 52.

              From the following options, select the correct reason for the excess pressure inside the eye in the condition called Glaucoma. 

              a) The pressure in the eye exerted by the unabsorbed blood.

              b) The defect in the formation of aqueous fluid.

              c) The defect in the reabsorption of aqueous fluid.

              d) The excess amount of vitreous fluid.



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              Qn 53.

              The major parts related to the process of hearing are given below. Prepare a flowchart by arranging the words given, starting from the Oval window till the Cerebrum.

              a) Auditory nerve    b) Endolymph      c) Hair cells     d) Oval window    e) Cerebrum    f) Basilar membrane.

               



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              Qn 54.

              Observe the following figures and answer the questions.

              ‌a) Identify the picture A and B.

              b) Deficiency of the pigment of which cell causes night blindness?

              c) The defect of which cell causes color blindness.

               



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              Qn 55.

              Compare the activities given in the table to identify the taste and smell and complete suitably.

              a) …………… dissolves in mucus.

              Food particles dissolve in saliva.

              Olfactory receptors are stimulated.

              b) ……………. are stimulated.

              Impulses are formed.

              Impulses are formed.

              c) impulses reach the brain through the ……………. nerve.

              Impulses reach the d) …………. nerve.

              e) Senses smell.

              Senses taste.



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              Qn 56.

              Answer the following questions.

              a) Which is the photoreceptor that enables colour vision? 

              b) The change in aminoacids in the opsin protein has a crucial role in colour vision. Substantiate.

               



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              Qn 57.

              Select the suitable pair from the following.

              a) The movement of fluid in cochlea: The vibration of Stapes.

              b) The hair cells in the basilar membrane: Maintenance of body balance.

               



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              Qn 58.

              Analyse the following figure and answer the following questions.

              a) From where the vestibular nerve receive impulses?

              b) Where do the receptors that produce impulses to the auditory nerve locate?



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              Qn 59.

              from the following statements, identify the correct one.

              I) Touch receptors are not uniformly distributed all over the skin.

              ii) Smell is experienced when the impulses from smell receptors reach the cerebellum.

              ‌iii) The tongue has taste buds to feel sweat, salt, sour, bitter and umami tastes.

              iv) The impulses of hearing are conveyed to cerebrum through the vestibular nerve.

              a) i, ii are correct b) i, iii are correct c) i, iv are correct d) ii, iv are correct.



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              Qn 60.

              Complete the flow chart.



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              Qn 61.

              Select the suitable pair from the following.

              1. Night blindness: The condition in which one is unable to detect colour.

              2. Glaucoma- The excess pressure experienced in the eye.

              3. ‌Conjunctivitis- The opaqueness of eye lens.

              4. Xerophthalmia- Unable to see in dim light.



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              Qn 62.

              Correct the errors if any in the underlined terms in the following statements.

              a) Aqueous fluid is formed from the blood.

              b) Vitreous fluid is seen in the cavity between the cornea and the lens.

              c) Cornea is the transparent part in front of the choroid.

              d) Choroid is the layer of the eye with blood vessels.



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              Qn 63.

              Arrange the items in column A in accordance with the items in Column B.

              A

              B

              Braille letter

              Nutrients to eye tissues

              Cone cells

              The shape of the eye ball.

              Vitreous fluid

              Iodopsin

              Aqueous fluid

              Touch receptors

               

              Eye spot