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प्रश्न
Very short answer question.
Define Speciation.
उत्तर
The process of formation of a new species from the pre-existing species is called speciation.
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संबंधित प्रश्न
The palisade cells of a species of plant contain 28 chromosomes. How many chromosomes will there be in each gamete produced by the plant?
(a) 56
(b) 28
(c) 14
(d) 4
Which of the following may be used to obtain an F2 generation?
(a) allowing flowers on a parent plant to be self-pollinated
(b) allowing flowers on an F1 plant to be self-pollinated
(c) cross-pollinating an F1 plant with a parent plant
(d) cross-pollinating two parent plants
What name is given to the sequence of gradual changes over millions of years in which new species are produced?
Does geographical isolation of individuals of a species lead to the formation of a new species? Provide a suitable explanation for your answer.
Define 'speciation'. Explain how speciation occurs.
Will geographical isolation be a major factor in the speciation of a self-pollinating plant species? Give reason for your answer.
According to the evolutionary theory, the formation of a new species is generally due to ______
One of the following has not been produced from wild cabbage by the process of artificial selection. This one is :
(a) kohlrabi
(b) cabbage
(c) spinach
(d) kale
The process by which new species develop from the existing species is known as ______
Arrange the major events as per geological time scale:
(Origin of conifers, Abundance of trilobites, Diversification of fishes, All types of marine algae, Formation of Forests, Rise of dinosaurs, Extinction of seed ferns, Rise of modern insects.)
| Geological time period |
Major events | |
| 1. | Cambrian | ______ |
| 2. | Devonian | ______ |
| 3. | Permian | ______ |
| 4. | Triassic | ______ |
