Biology
General
Easy
Question
Which one of the following phenomenon supports Darwin’s concept of natural selection in organic evolution?
- Development of transgenic animals
- Production of ‘Dolly’ the sheep by cloning
- Prevalence of pesticide resistance insects
- None of the above
The correct answer is: Prevalence of pesticide resistance insects
According to Natural Selection theory as a result of struggle for existance only those organisms could survive which have favourable variations to adapt environmental conditions and result in survival of the fittest.
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When two species of different genealogy come to resemble each other as a result of adaptation, the phenomenon is termed as
When two species of different genealogy come to resemble each other as a result of adaptation, the phenomenon is termed as
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Which one is the largest ape among the given four genera of apes?
Which one is the largest ape among the given four genera of apes?
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Which of the following situation would most likely result in the highest rate of natural selection?
Which of the following situation would most likely result in the highest rate of natural selection?
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Modern synthetic theory is based on
Modern synthetic theory is based on
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Primitive man was originated during
Primitive man was originated during
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Theory of spontaneous generation or abiogenesis was first disproved by
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First mammal occurred in which era/period?
First mammal occurred in which era/period?
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Diagram given below indicates
Diagram given below indicates
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Thorns of 
and tendrils of 
are examples of
Thorns of and tendrils of are examples of
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evolved about 1.7 million years ago. They used fire and tools and also used animal hides as clothing. The fossil of were named as
evolved about 1.7 million years ago. They used fire and tools and also used animal hides as clothing. The fossil of were named as
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Comparative anatomy and morphology shows …A… and …B… among organisms of today and those that existed years ago. Such similarities can be interpreted to understand whether …C… ancestors were shared or not
Choose the correct option for A, B and C the complete the given NCERT statement
Comparative anatomy and morphology shows …A… and …B… among organisms of today and those that existed years ago. Such similarities can be interpreted to understand whether …C… ancestors were shared or not
Choose the correct option for A, B and C the complete the given NCERT statement
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Homology refer to
I. Divergent evolution
II. Common descent
III. Convergent evolution
Choose the correct option
Homology refer to
I. Divergent evolution
II. Common descent
III. Convergent evolution
Choose the correct option
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All organisms shares the same genetic code. This commonality is an evidence that
All organisms shares the same genetic code. This commonality is an evidence that
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Mendel described the frequency of …A… for offsprings of a single …B…
Choose the correct options for A and B to complete the given NCERT statement
Mendel described the frequency of …A… for offsprings of a single …B…
Choose the correct options for A and B to complete the given NCERT statement
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Maths-
how many ways can the letters of the word ARRANGE be arranged so that
iii) Neither two A’s nor the two R’s are together.
how many ways can the letters of the word ARRANGE be arranged so that
iii) Neither two A’s nor the two R’s are together.
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