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प्रश्न
Practise drawing various animals and plants.
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उत्तर
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संबंधित प्रश्न
List 10 modern-day animals and using the internet resources link it to a corresponding ancient fossil. Name both.
Using various resources such as your school library or the internet and discussions with your teacher, trace the evolutionary stages of any one animal say horse.
The earliest fossil form, in the phylogeny of horse, is ______.
Which of the following is an example of link species?
Two organisms occupying a particular geographical area (say desert) show similar adaptive strategies. Taking examples, describe the phenomenon.
Match List I with List II.
| List I | List II |
| A. Mesozoic Era | I. Lower invertebrates |
| B. Proterozoic Era | II. Fish & Amphibia |
| C. Cenozoic Era | III. Birds & Reptiles |
| D. Paleozoic Era | IV. Mammals |
Choose the correct answer from the options given below:
When did the first cellular forms of life appear on Earth?
Approximately how long ago did invertebrates exist in aquatic environments?
When did some fish lineages develop the ability to move onto land?
Which of the following is an adaptation that allowed amphibians to survive in both aquatic and terrestrial conditions?
When did dinosaurs disappear from the Earth?
What possible explanation is given for the sudden extinction of dinosaurs?
How did the extinction of dinosaurs affect the evolution of mammals?
Which of the following best describes early mammals?
What happened to South American mammals over evolutionary time?
