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प्रश्न
Explain with an example for the given, how the following provides evidence in favor of evolution in organisms :
Fossils
उत्तर
Fossils:- The remains of dead animals or plants which lived in the remote past are known as fossils. The fossils provide evidence for evolution. For example, a fossil bird called Archaeopteryx looks like a bird, but it has many other features which are found in reptiles. It has feathered wings like those of birds but teeth and tail like those of reptiles. Therefore, Archaeopteryx is a connecting link between the reptiles and birds and hence suggests that birds have evolved from reptiles.
APPEARS IN
संबंधित प्रश्न
(a) Select the homologous structures from the combinations given below:
(i) Forelimbs of whales and bats
(ii) Tuber of potato and sweet potato
(iii) Eyes of octopus and mammals
(iv) Thorns of Bougainvillea and tendrils of Cucurbita
(b) State the kind of evolution they represent.
(a) Select the analogous structures from the combination given below:
(i) Forelimbs of whales and bats
(ii) Eyes of octopus and mammals
(iii) Tuber of sweet potato and potato
(iv) Tuber of Bougainvillea and tendrils of Cucurbita
(b) State the kind of evolution they represent
Four students A, B, C and D reported the following set of organs to be homologous. Who is correct ?
(A) Wings of a bat and a butterfly
(B) Wings of a pigeon and a bat
(C) Wings of a pigeon and a butterfly
(D) Forelimbs of cow, a duck and a lizard
Explain the evolution of giraffe's neck according to Lamarck's theory of evolution.
Find an odd one out.
Give an example for convergent evolution and identify the features towards which they are converging.
Complete the following chart:
Explain natural selection with the example of industrial melanism.
Write avian characters of Archaeopteryx.
Give examples of homologous organs and analogous organs in plants.
