Class 12 Biology - Chapter Evolution NCERT Solutions | Describe one example of adaptive radiati
Describe one example of adaptive radiation.
Adaptive radiation is an evolutionary process that produces new species from a single, rapidly diversifying lineage. This process occurs due to natural selection. An example of adaptive radiation is Darwin finches, found in Galapagos Island. A large variety of finches is present in Galapagos Island that arose from a single species, which reached this land accidentally. As a result, many new species have evolved, diverged, and adapted to occupy new habitats. These finches have developed different eating habits and different types of beaks to suit their feeding habits. The insectivorous, blood sucking, and other species of finches with varied dietary habits have evolved from a single seed eating finch ancestor.
More Questions From Class 12 Biology - Chapter Evolution
- Q:- Explain antibiotic resistance observed in bacteria in light of Darwinian selection theory.
- Q:- Can we call human evolution as adaptive radiation?
- Q:- Try to trace the various components of human evolution (hint: brain size and function, skeletal structure, dietary preference, etc.)
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Practise drawing various animals and plants.
- Q:- 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.
- Q:- Attempt giving a clear definition of the term species
- Q:- List 10 modern-day animals and using the internet resources link it to a corresponding ancient fossil. Name both.
- Q:- Find out from newspapers and popular science articles any new fossil discoveries or controversies about evolution.
- Q:- Find out through internet and popular science articles whether animals other than man have self-consciousness.
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Fill in the blanks:
(a) Humans reproduce __________. (asexually/sexually)
(b) Humans are__________. (oviparous/viviparous/ovoviviparous)
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(d) Male and female gametes are __________. (diploid/haploid)
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