1. Parallel venation               A. 2 seed coats

2. Dicot plants                      B. Di cot plants 

3. Monocot plants                 C. 1 Seed coat

4. Reticulate venation             D. Mono cot plants

1. Body stream lined

2. Bones air filled (pneumatic)

3. Fertilization internal

4. Exoskeleton made of feathers

5. Powerful wing muscles 

6. Presence of beak

1. Fishes                  A. Internal  fertilization

2. Amphibians         B. Calcareous  eggs

3. Mammals             C. External fertilization.

4. Reptiles               D. Eggs laid in water.