question_answer

    (a) What is the difference between respiration in plants and in animals? (b) How does respiration occur in the stem of the plant?     

Answer:

                  (a) The differences between respiration in plants and animals are

S. No.	Respiration in Plants	Respiration in Animals
(i)	No breathing is involved in plants.	Animals breathe
(ii)	Absence of respiratory organs.	Animals have respiratory organs like gills and lungs
(iii)	Respiration occurs at much lower rate.	Respiration occurs at faster rate. (1x3=3)

(b) Respiration requires gaseous exchange for equal distribution of gas molecules in the cell. Gaseous exchange in plants having herbaceous stem is achieved through stomata by the process of diffusion.                             (1) In woody and hard stems of big plants, the exchange of gases takes place through lenticels, which are present on the bark of the stem.                                                                   (1)