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प्रश्न
Long answer question.
What is adaptive radiation? Explain with suitable example.
उत्तर
1. The process of evolution which results in the transformation of original species to many different varieties is called adaptive radiation.
2. Darwin’s Finches is one of the best examples of adaptive radiation. During his visit to Galapagos Islands, Charles Darwin also noticed a variety of small birds. These birds are now called Darwin’s finches. Darwin concluded that the American mainland species of the bird was the original one from which they migrated to the different islands of Galapagos. These birds adapted to the different environmental conditions of these islands. From original seed-eating features, many other forms with altered beaks evolved into insectivorous features.
3. Another example of adaptive radiation is Australian Marsupials. In Australia, there are many marsupial mammals who evolved from a common ancestor.
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संबंधित प्रश्न
Give the floral adaptations for chiropterophily.
In which type of adaptation, forelimbs are modified into wings?
(a) Aquatic adaptations
(b) Volant adaptations
(c) Arboreal adaptations
(d) Cursorial adaptations
Explain adaptive radiation with the help of a suitable example.
Why are analogous structures a result of convergent evolution?
Cite an example where more than one adaptive radiations have occurred in an isolated geographical area. Name the type of evolution your example depicts and state why it is so named.
Give four adaptations in flowers pollinated by insects.
Parallelism is:
In Australia, marsupials and placental mammals have evolved to share many similar characteristics. This type of evolution may be referred to as ______.
Adaptive radiation refers to ______
Tasmanian Wolf is a marsupial while Wolf is a placental mammal. This shows
