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प्रश्न
Explain the following:- Speciation
What is speciation?
उत्तर १
The formation of a new species by evolution or any genetic modification of the previously existing species in a population is called speciation.
उत्तर २
Speciation:- The process by which new species develop from the existing species is known as speciation.
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संबंधित प्रश्न
List four factors that could lead to speciation. Which of them cannot be a major factor in the speciation of a self-pollinating plant species?. Give reason to justify your answer.
How does the creation of variation in a species ensure its survival
A plant has two varieties, one with red petals and the other with white petals. When these two varieties are cross-pollinated, all the offsprings have red petals?
(a) Which gene is dominant?
(b) Choose suitable letters to represent the two genes.
Name an animal having rudimentary eyes.
Why are human beings who look so different from each other in terms of size, colour and looks said to belong to same species?
Name five varieties of vegetables which have been produced from 'wild cabbage' by the process of artificial selection.
State the various factors which could lead to the formation of new species.
Will geographical isolation be a major factor in the speciation of a self-pollinating plant species? Give reason for your answer.
Define 'natural selection'.
Complete the following chart:
| Animals | Connecting link between | |
| (1) | Balanoglossus | ______ |
| (2) | ______ | Annelida and Arthropoda |
| (3) | Lung fishes | ______ |
| (4) | ______ | Reptiles and mammals |
| (5) | Seymouria | ______ |
| (6) | Fishes and Amphibia |
