Differentiate between
Oviparity and viviparity
| Oviparity | Viviparity |
| 1. The animals lay eggs and young ones hatch from them. | 1. Animals give birth to young ones. |
| 2. Found in reptiles and birds | 2. Found in Mammals |
Differentiate between
Direct and Indirect development
Differentiate between :
Acoelomate and Pseudocoelomate
Differentiate between
Open and Closed circulatory system
Differentiate between
Polyp and Medusa
