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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?
Ancestral amphibians were tetrapods that evolved during:
Viviparity is considered to be more evolved because ______.
When we talk of functional macromolecules (e.g. proteins as enzymes, hormones, receptors, antibodies etc), towards what are they evolving?
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?
Which of the following is an adaptation that allowed amphibians to survive in both aquatic and terrestrial conditions?
What major survival advantage did thick-shelled eggs provide to reptiles?
For approximately how many years did reptiles dominate the Earth?
Which of the following is an example of a reptile that returned to the water about 200 mya?
What possible explanation is given for the sudden extinction of dinosaurs?
How did the extinction of dinosaurs affect the evolution of mammals?
What happened to South American mammals over evolutionary time?
