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प्रश्न
The most common types of fossils are ------------------------.
विकल्प
moulds
casts
Actual remains
models
उत्तर
The most common types of fossils are Actual remains.
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संबंधित प्रश्न
Write the similarity between the wing of a butterfly and the wing of a bat. What do you infer from the above with reference to evolution?
Explain the terms analogous and homologous organs with examples.
Explain with an example for the given, how the following provides evidence in favor of evolution in organisms :
Analogous organs
Some dinosaurs had feathers although they could not fly birds have feathers that help them to fly. In the context of evolution, this means that ______
There are five animals A, B, C, D and E. The animal A uses its modified forelimbs for flying. The animal B uses its forelimbs for running whereas the animal C uses its forelimbs for grasping. The animal D can live on land as well as in water and uses its forelimbs to prop up the front end of its body when at rest. The animal E which respires by using spiracles and tracheae uses wings for flying but its wings are analogous to the modified forelimbs of animal A.
(a) What could the animals A, B, C, D and E be?
(b) Why are the forelimbs of animals A, B, C, D called homologous organs?
(c) What does the existence of homologous organs in animals A, B, C and D tell us about their ancestors ?
(d) Why are the modified forelimbs of animal A and the wings of animal E called analogous organs?
(e) State whether animals A and E have a common ancestor or not.
_____________ is a vestigial organ in human beings.
Select the CORRECT match.
Study of fossils is ______.
Appearance of antibiotic-resistant bacteria is an example of ______.
Did aquatic life forms get fossilised? If, yes where do we come across such fossils?
