Tag: the origin of cells and cell division

Questions Related to the origin of cells and cell division

Prctobiogenesis occurred :

biology concept of life theories of the origin of life origin of life the origin of cells and cell division

  1. 1.2 billion years ago

  2. 2.0 billion years ago

  3. 2.5 billion years ago

  4. More than 3.5 billion years ago

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Correct Option: D

Origin of first life is

biology concept of life theories of the origin of life origin of life the origin of cells and cell division

  1. Biogeny

  2. Biopoiesis

  3. Cognogeny

  4. Chemogeny.

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Correct Option: A

Assertion : We have lost all the direct evidences of origin of life.

Reason : The person responsible to protect the evidences were not skilled.

biology concept of life theories of the origin of life origin of life the origin of cells and cell division

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion

  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion

  3. If the assertion is true but the reason is false

  4. If both the assertion and reason are false

  5. If the assertion is false but reason is true

Show answer
Correct Option: C
Explanation:

During the profound changes that have been taking place since the remote past we have lost the direct evidences of origin of life. Due to these changes, the scientists, though skilled were not able to protect the evidence.

Which one of the following is the most effect tool in species delimitation within the species complex?

biology concept of life theories of the origin of life origin of life the origin of cells and cell division

  1. Cytogenesis

  2. Photochemistry

  3. RNA characterization

  4. DNA finger printing

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Correct Option: A

Which of the following ship was sailed by Darwin?

biology concept of life theories of the origin of life origin of life the origin of cells and cell division

  1. H.M.S. Beagle

  2. C.D. Beagle

  3. H.M.S. Victory

  4. R.M.S. Lusitania

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Correct Option: A
Explanation:

Charles Darwin’s five-year voyage in the early 1830s was on H.M.S. Beagle. It has become legendary, as insights gained by the Darwin on his trip to exotic places like Galapagos island greatly influenced his masterwork, the book "On the Origin of Species"

So, the correct answer is 'H.M.S. Beagle'

Living organisms on the Earth have evolved gradually from one form to another over the million years. This statement was given by

biology concept of life theories of the origin of life origin of life the origin of cells and cell division

  1. Darwin

  2. Robert Hook

  3. Linneaus

  4. None of the above

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Correct Option: A
Explanation:
Most of the life forms that we see today have arise by changes that has occurred over the time which allow the organism a better survival. This idea was given by Charles Darwin in 1859 in his book 'The origin of species'
So, the correct answer is 'Darwin'

Which of the following factors are involved in the formation of new species?

biology concept of life theories of the origin of life origin of life the origin of cells and cell division

  1. Isolation and mutation

  2. Competition and variation

  3. Isolation and competition

  4. Competition and mutation

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Correct Option: A

The species which have a restricted distribution are known as.

biology concept of life theories of the origin of life origin of life the origin of cells and cell division

  1. Ecospecies

  2. Allopatric species

  3. Sympatric species

  4. Endemic species

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Correct Option: A

Choose the correct answers from the alternatives given.
Which of the following live in habitats much like those of the early Earth?

biology concept of life theories of the origin of life origin of life the origin of cells and cell division

  1. Protozoans

  2. Eubacteria

  3. Archaebacteria

  4. Cyanobacteria

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Correct Option: C
Explanation:

The fossil shapes almost 3.5 billion years ago, identify them as archaea.

So, the correct option is 'Archaebacteria'.

Choose the correct answers from the alternatives given .
Which of the following statements is true?

biology concept of life theories of the origin of life origin of life the origin of cells and cell division

  1. It took so long for prokaryote evolution because the primitive atmosphere screened out the ultraviolet radiation from the Sun

  2. Primitive atmosphere was an oxidising one and todays is a reducing one, making photosynthesis possible

  3. Reducing primitive atmosphere contributed to the origin of life, and the oxidising one of today would hinder it

  4. Primitive atmosphere contains 20% oxygen, just like it is today

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Correct Option: C
Explanation:

The early atmosphere of earth was made of nitrogen and carbon dioxide gases before life began. When the photosynthesizing organisms multiplied then the carbon dioxide was replaced by oxygen. So, the correct option is "reducing primitive atmosphere contributed to the origin of life, and the oxidizing one of today would hinder it".