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प्रश्न
Give the respective scientific terms used for studying the development of new type of organisms from the existing ones.
उत्तर
Evolution is used for studying the development of new types of organisms from the existing ones.
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संबंधित प्रश्न
Give the respective scientific terms used for studying the mechanism by which variations are created and inherited
Insects, octopus, planaria and vertebrates possess eyes. Can we group these animals together on the basis of eyes that they possess ? Justify your answer giving reason.
What is meant by dominant genes and recessive genes? Give one example of each.
A black mouse mates with a brown mouse, and all the offsprings are black.
(a) Why are no brown offsprings produced?
(b) If two of the black offsprings mate with each other what kind of offspring would you expect and in what proportions? Give reason for your answer.
Match the terms given in column I with those given in column II :
| Column I | Column II |
| (1) Fossil | (a) A famous evolutionist |
| (2) A theory of evolution | (b) Survival of the fittest |
| (3) Probable ancestor of birds | (c) Petrified remains of prehistoric life |
| (4) Charles Darwin | (d) Father of genetics |
| (5) Gregor Mendel | (e) Archaeopteryx |
What is meant by acquired and inherited traits? Explain with one example each.
Explain the terms 'analogous organs' and 'homologous organs' with examples.
According to scientists, aves have evolved from :
(a) mammals
(b) amphibians
(c) reptiles
(d) arthropods
Short answer question.
Draw a graph to show that natural selection leads to disruptive change.
Evolution occurs as a result of mutations in ______.
