List 10 modern-day animals and using the internet resources link it to a corresponding ancient fossil. Name both.
Solution and Explanation
The modern-day animals and their ancient fossils are listed in the following table.
| S.No | Animal | Fossil |
| 1. | Man | Ramapitthecus |
| 2. | Horse | Eohippus |
| 3. | Dog | Leptocyon |
| 4. | Camel | Protylopus |
| 5. | Elephant | Moerithers |
| 6. | Whale | Protocetus |
| 7. | Fish | Arandaspis |
| 8. | Terapods | Icthyostega |
| 9. | Bat | Archaeonycteris |
| 10. | Giraffe | Palaeotragus |
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ডারউইন কোনটিকে 'প্রকৃতির খেলা' রূপে আখ্যায়িত করেছিলেন?
সমবয়ী অঙ্গের বিবর্তনকে বলা হয়
একটি মৌমাছি কীভাবে শ্রমিক মৌমাছি অন্য শ্রমিক মৌমাছিদের খাদ্য উৎসের বার্তা দেয় ব্যাখ্যা করো। ডারউইনের অভিব্যক্তি সংক্রান্ত তত্ত্বের তিনটি বিষয় ব্যাখ্যা করো — প্রাকৃতিক নির্বাচন, অস্তিত্বের জন্য সংগ্রাম, প্রকরণের উৎপত্তি।
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OR
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Concepts Used:
Evolution
Evolution is a process that occurs in changes in the genetic content of a population over time. Evolutionary change is generally classified into two: microevolution and macroevolution. The process of changes in allele frequencies in a population over time is a microevolutionary process. Three main mechanisms that cause allele frequency change are natural selection, genetic drift, and gene flow. On the other hand, macroevolution refers to change at or above the level of the species.