question_answer

           Write one point of difference each between the following (a) Porifera and coelenterate (b) Birds and reptiles       

Answer:

   (a) In comparison to poriferans, coelenterates have more developed body design differentiation. Poriferans have pores all over their body surface, while coelenterates do not have.                 

Porifera	Coelenterate
Animals have less developed body design. These have pores all over their body.	Coelenterates have more developed body design. These do not have pores all over their body.

(b)Birds have four-chambered heart, while reptiles have three-chambered heart.

Birds	Reptiles
These have four-cham-bered heart. These have feathers.	These have three-cham-bered heart. These do not have feathers.