Biology
General
Easy
Question
Theory of spontaneous generation or abiogenesis was first disproved by
- A R Wallace
- Francisco Redi
- Louis Pasteur
- A I Oparin
The correct answer is: Francisco Redi
According to abiogenesis or theory of spontaneous generation, life originated from non-living matter.FranciscoRedi (1668) gave the theory of biogenesis (life comes only from pre-existing life) and first disproved the theory of abiogenesis by covering and uncovering boiled rotten meat.
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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
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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
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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
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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
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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
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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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how many ways can the letters of the word ARRANGE be arranged so that
ii) The two A’s are together but not the two R’s are together.
how many ways can the letters of the word ARRANGE be arranged so that
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In how many ways can the letters of the word ARRANGE be arranged so that
i) The two R’ s are never together
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i) The two R’ s are never together
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how many ways can 3 prizes be distributed among 4 boys, when
ii) a boy may get any number of prizes ?
how many ways can 3 prizes be distributed among 4 boys, when
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In how many ways can 3 prizes be distributed among 4 boys, when
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How many odd numbers, greater than 600000 can be formed from the digits 5, 6, 7, 8, 9, 0 if Repetitions are allowed.
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how many ways four friends can put up in 8 hotels of a town if
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how many ways four friends can put up in 8 hotels of a town if
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