Differentiate between :
Acoelomate and Pseudocoelomate
Acoelomate | Psedocoelomate |
1. The body cavity is absent | The mesoderm present is scattered in pouches and the cavity present is considered to be false. |
Found in Platyhelminthes | Found in Aschelminthes |
Differentiate between
Polyp and Medusa
Polyp | Medusa |
Sessile and cylindrical | Motile, free-living and umbrella shaped |
e.g Hydra | e.g Aurelia |
Differentiate between
Direct and Indirect development
Direct Development | Indirect Development |
The youngs ones are completely different from their adult forms. | The young ones resemble their adult form. |
Occurs in cockroach and frog | Occurs in birds, reptiles and mammals |
Differentiate between
Open and Closed circulatory system
Open Circulatory system | Closed circulatory system |
1. The blood flows in spaces called sinuses and cells and tissues are bathed in blood. | 1. The blood flows through a network of blood vessels |
2. Inefficient | 2. Efficient |
3. Found in Arthropoda and Mollusca | 3. Found in Annelida and mammals. |