Biology
General
Easy
Question
All the existing life forms share …A… and share …B… ancestors. The geological history of earth closely correlates with …C… history of earth.
Choose the right option for A,B and C to complete the given statement with reference to NCERT text book
- A-dissimilarities, B-dissimilar, C-zoological
- A-dissimilarities, B-dissimilar, C-botanical
- A-dissimilarities, B-dissimilar, C-biological
- A-similarities, B-common, C-biological
The correct answer is: A-similarities, B-common, C-biological
A-Similarities, B-Common, C-Biological
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A brief reduction in size of a population, due to natural calamities, usually leads to random genetic drift’. For this statement, identify the correct example from the following.
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Choose the correct option for A,B,C,D and E to complete the given statement
Hugo de Vries based on his work on …A… brought forth the idea of …B…, large difference arising suddenly in a population. He believed that it is mutation which causes evolution and not the …C… that Darwin talked about. Mutations are random and …D…, while Darwinian variations are small and …E…
Choose the correct option for A,B,C,D and E to complete the given statement
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Which of the following statements correctly defines the phenomenon of genetic drift?
I. Random change in gene allele frequency
II. Occur by chance
III. It is directional
IV. Causes elimination of certain alleles
V. Causes fixation of alleles
The correct combination is
Which of the following statements correctly defines the phenomenon of genetic drift?
I. Random change in gene allele frequency
II. Occur by chance
III. It is directional
IV. Causes elimination of certain alleles
V. Causes fixation of alleles
The correct combination is
BiologyGeneral
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Which of the following statements regarding the evolution of plants and animals is/are correct?
I. Amphibians evolved into reptiles
II. Fish with stout and strong fins could move on land and go back to water. This was about 350 million years ago
III. Giants ferns fell to form wall deposits slowly
IV. About 65 million years ago dinosaurs died out
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The correct combination is
Which of the following statements regarding the evolution of plants and animals is/are correct?
I. Amphibians evolved into reptiles
II. Fish with stout and strong fins could move on land and go back to water. This was about 350 million years ago
III. Giants ferns fell to form wall deposits slowly
IV. About 65 million years ago dinosaurs died out
V. is the connection link between birds and reptiles
The correct combination is
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The variation in the natural selection is on, it is due to the random mutations. What does this imply about the natural selection?
The variation in the natural selection is on, it is due to the random mutations. What does this imply about the natural selection?
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Two nucleotide sequences found in two different species are exactly the same. This suggests that these species
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Diagram given below indicates
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