Heredity and evolution Worksheet-16
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Define the terms :
(i) Analogous organs (ii) Sex chromosome
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In terms of evolution, what is the significance of homology between a human hand and a wing of a bird?
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What is meant by analogous organs? Taking a suitable example, explain how they support the theory of Organic Evolution.
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Mention any four details that can be inferred about organisms from their fossils.
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What are fossils? Of what interest are fossils to the evolutionary biologists?
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Name one organ analogous to the wing of bird. Why are they both analogous? Can you include the wing of bat also with them under the same category? Give reason.
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Differentiate between homologous and analogous organs. Give one example of each.
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Give any two reasons why Mendel selected pea for his experiments?
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List any three structures in animals as examples of homologous organs.
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Explain the mechanism of sex determination in human beings.
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Define genetics. What is the contribution of Mendel in this branch of Biology?
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What is a sex chromosome?
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What does the science of Genetics deal with?
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How the study of fossils is considered significant?
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What was the basic study material of Mendel? How did he bring the term 'factor'?
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Why are asexually reproducing organisms capable of showing the hereditary features more?
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How will you substantiate the statement that heredity and its concepts were known to the ancient civilisations?
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Which plant was chosen by Mendel to work upon? What was his observation?
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With suitable example highlight how temperature has an effect on sex determination in the animal world.
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How will you conclude that birds are closely related to reptiles?
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Explain with an example how differences take place in asexual reproduction.
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Who was named the 'father of genetics' and why?
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Explain with an example how trait is inherited in human beings.
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How does genes control traits?
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What is genetic drift?
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Explain natural selection.
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What are the basic characteristics of organisms?
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How will you determine the age of fossil?
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Give the uses of fossils.
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Write a note on molecular phylogeny.