Question

Observe the following picture. Write the answers of the following questions:

1. Identify the class of animals shown in above picture.
2. Which similarities are shown in above animals from the adaptation point of view?
3. Why these animals are included in different classes inspite of their similarities? 

Answer 1

1. Class of animal
   • Fig. A: Pisces
   • Fig. B: Aves
2. In case of both of these animals their body is spindle shaped and streamlined.
3. These animals are included in different classes inspite of their similarities because of following points of differences:

   Sr No.	Pisces	Aves
   (i)	Exoskeleton is in the form of scales	Exoskeleton is in the form of feathers.
   (ii)	Body is spindle shaped to minimize water resistance.	Body is spindle shaped to minimise air resistance.
   (iii)	Respiration occur with gills.	Respiration occur with lungs.