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प्रश्न
Find out through internet and popular science articles whether animals other than man have self-consciousness.
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उत्तर
Nature selects for fitness. The so-called fitness is based on the characteristics of the organism which are hereditary. Therefore, there must be a genetic basis for selection and evolution. This means that those organisms (animals) are better adapted to survive in adverse environments. Adaptability is hereditary. The self-consciousness of organisms plays an important role in adaptation. The final result of adaptability and natural selection is fitness. According to biologists, many animals have non-human self-consciousness.
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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.
Which of the following is an example of link species?
Ancestral amphibians were tetrapods that evolved during:
When we talk of functional macromolecules (e.g. proteins as enzymes, hormones, receptors, antibodies etc), towards what are they evolving?
Two organisms occupying a particular geographical area (say desert) show similar adaptive strategies. Taking examples, describe the phenomenon.
Practise drawing various animals and plants.
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?
What major survival advantage did thick-shelled eggs provide to reptiles?
Which of the following is an example of a reptile that returned to the water about 200 mya?
When did dinosaurs disappear from the Earth?
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?
