question_answer

  Give one function of each of the following (i) Stomata (ii) Root nodules (iii) Cardiac muscle fibres

Answer:

                  (i) Stomata It helps in gaseous exchange between the plant and atmosphere. Transpiration also takes place through stomata.                                                            (1) (ii) Root nodules It contain nitrogen fixing bacteria and fixes atmospheric nitrogen in soil.                                                                     (1) (iii) Cardiac muscle fibres It helps in rhythmic contraction and relaxation of heart throughout life.                                                (1)