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प्रश्न
Two organisms occupying a particular geographical area (say desert) show similar adaptive strategies. Taking examples, describe the phenomenon.
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उत्तर
One can say that it is the similar habitat that has resulted in selection of similar adaptive features in different groups of organisms but toward the same function. Spins of Opuntia and cactus are modifications of leaves to prevent the loss of water in desert.
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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.
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 ______.
What is the most important pre-condition for adaptive radiation?
When we talk of functional macromolecules (e.g. proteins as enzymes, hormones, receptors, antibodies etc), towards what are they evolving?
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?
When did some fish lineages develop the ability to move onto land?
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?
