Though we cannot be certain, what can be the probable reason/s for the sudden disappearance of dinosaurs from the Earth?
I: | Climatic changes killed them |
II: | Most of them evolved into birds |
1. | I only | 2. | II only |
3. | Both I and II | 4. | Neither I nor II |
Which of the following is not a major evolutionary trend seen in the evolution of horses?
1. | Progressive increase in the number of toes |
2. | Increase in the complexity of the molar teeth |
3. | Lengthening of the limbs in general |
4. | Enlargement of the brain |
Around 200 mya, some land reptiles went back to the water to evolve into fish-like reptiles, for example:
1. | Pareiasaurus | 2. | Pelycosaurus |
3. | Ichthyosaurs | 4. | Archosaurus |
The extinct reptilian lineage that evolved into dinosaurs and later on the birds is:
1. | Pelycosaurs | 2. | Synapsids |
3. | Tuataras | 4. | Thecodonts |
Fishes with stout and strong fins that could move on land and go back to water existed about:
1. | 500 mya | 2. | 350 mya |
3. | 320 mya | 4. | 300 mya |