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Name: ................................................................... Class: ..................... Date: ........................
           WORKSHEET 20 SolutionsSolutions
                                                                                                                                     WORKSHEET 30 Food relationshipsFood relationships


           Look at the figures, then answer.                                                                                          Choose the correct answer.



           In which figure does the solubility process get faster? Why?                                                                 All these examples are internal parasites except………….




           1- Solubility in figure………is faster than that in                           100         100                                    a. Bilharzia worms   b. bugs    c. Ascaris worms    d. tape worms

             figure…….                                                                80 60       80 60
                                                                                     40          40                                     2. ……….is an external parasite.
           -That's because……………affects the speed of                                  20          20
            the solubility process.                                              (A)          (B)
                                                                                                                                        a. A flea      b. Nodular bacteria        c. Drosera         d. Dionaea


           2- Solubility in figure………is faster than that                               100 80                                                     3. Filaria worms cause the………disease.

                                                                                      60
               in figure…….                                                            40 20      100
             -That's because……………affects the speed                                               80 60                                  a. malaria         b. elephantiasis      c. anemia     d. belharzia
                                                                                                 40
               of the solubility process.                                          (A)         (B)                                         4. …………can convey plague disease to man.
                                                                                                 20



           3- Solubility in figure………is faster than that

               in figure…….                                                                                                              a. Ascaris       b. Fungi     c. Liver worms      d. Fleas

             -That's because……………affects the speed                                                                                        5. The jawless lamprey feeds by sucking the blood of………...

              of the solubility process.                                           (a)         (b)

                                                                                                                                          a. man         b. fish        c. worms        d. no answer

           4- Solubility in figure………is faster than                      3gm.                     powdered

               that in figure…….                                         sugar cubes  100        100 sugar                               6. Mushroom fungus is a….……….

              That's because……………affects the speed                                  80 60       80 60
                                                                                    40          40                                      a. saprophyte        b. parasite        c. worm        d. plant
              of the solubility process.                                            20          20
                                                                                 (A)          (B)                                       7. The relationship between sponge and tiny aquatic living

                                                                                                                                        organisms is……...
           5- Solubility in figure (A) is faster than that
               in figure (B)                                                       SUGAR    SALT                                         a. parasitism     b. commensalism      c. predation      d. saprophytism

              That's because……………affects the speed

              of the solubility process.                                            (A)       (B)                                       8. Parasites are………...




                                                                                                                                        a. internal    b. external   c. internal and external    d. no answer
                                                                                            Teacher’s note
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