Tag: darwinism or theories of natural selection

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Questions Related to darwinism or theories of natural selection

Multiple choice biology evolution of life darwinism or theories of natural selection darwin's theory of evolution theories of evolution

Which one of the following is not associated with the theory of Charles Darwin

  1. Mutation

  2. Natural selection

  3. Survival of the fittest

  4. Struggle for existence
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Charles Darwin's theory is based on the survival of the fittest , the species who readily adapt to the changes in the environment for its existence tend to live. The species fitting to the natural selection only survive

So, the correct answer is 'Mutation'

Multiple choice biology evolution of life darwinism or theories of natural selection darwin's theory of evolution theories of evolution

Successful adaptation simply means

  1. an increase in fitness

  2. moving to a new place

  3. producing offspring

  4. evolving new characteristics
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Adaptation means that the species have built up some changes in them so as to fit into the environmental changes for the living it does not mean moving to some other place rather it means being in the same place and fighting against the changes and surviving , producing offspring is the  next step after adaptation to transfer the genes to the next generation 
So, the correct answer is 'an increase in fitness'
Multiple choice biology evolution of life darwinism or theories of natural selection darwin's theory of evolution theories of evolution

In formulating the theory of evolution by natural selection, Charles Darwin was greatly influenced by

  1. environmental factors

  2. mutations

  3. Maithus idea on population control

  4. all of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Charles Darwin was influenced by many writers, scholars, philosophers, and friends. One of his influences was Thomas Robert Malthus, a late-eighteenth century economist. Malthus wrote "Essay on the Principle of Population" (1798), which Darwin read and was inspired by. The central theme of Malthus' work was that population growth would always overpower food supply growth, creating perpetual states of hunger, disease, and struggle. The natural, ever-present struggle for survival caught the attention of Darwin, and he extended Malthus' principle to the evolutionary scheme.

So, the correct answer is 'Maithus idea on population control'.
Multiple choice biology evolution of life darwinism or theories of natural selection darwin's theory of evolution theories of evolution

The cluster of species formed on Galapagos islands are clear example of all, except

  1. Species formation arising by micro-evolutionary divergence from an ancestral form occupying different habitats, of microevolution leading to macro-evolution

  2. Founder's effect

  3. Adaptive radiation

  4. Sympatric speciation
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Founder's effect is the loss of genetic variation when a new colony is formed by a very small number of individuals from a larger population. The finches of Galapagos Island are a perfect example of the founder effect.
The process, whereby species evolve rapidly to exploit empty ecospace, is known as adaptive radiation. There are now at least 13 species of finches on the Galapagos Islands, each filling a different niche on different islands and this is a good example of adaptive radiation.
Sympatric speciation occurs when there are no physical barriers preventing any members of a species from mating with another, and all members are in close proximity to one another which is an example of Galapagos island.
Thus, the correct answer is 'Species formation arising by micro-evolutionary divergence from an ancestral form occupying different habitats, of microevolution leading to macro-evolution'.

Multiple choice biology evolution of life darwinism or theories of natural selection darwin's theory of evolution theories of evolution

Darwin said that all the organisms reproduce ...........

  1. With mutations

  2. Uprightly

  3. Prolifically

  4. Independently
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Darwin concluded that organisms reproduce prolifically and in each generation the number of individual increases that can survive. The individuals show some phenotypic variations, and these variations are heritable. Darwin also suggested that the process of evolution is based on natural selection.

Multiple choice biology evolution of life darwinism or theories of natural selection darwin's theory of evolution theories of evolution

According to Darwin, diversity is found in Australian marsupials is due to:

  1. Convergent evolution.

  2. Divergent evolution.

  3. Adaptive radiation.

  4. Co - evolution.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Adaptive radiation is the process where organisms diversify rapidly from an ancestral species into a multitude of new forms, particularly when a change in the environment makes new resources available, as seen with Australian marsupials.

Multiple choice biology evolution of life darwinism or theories of natural selection darwin's theory of evolution theories of evolution

Which types of birds were absent on Galapagos islands when they were surveyed by Darwin?

  1. Warblers and wood peckers

  2. Carnivores

  3. Cactus feeding

  4. Seed eating
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

On his visit to the Galapagos Islands, Charles Darwin found a few types of finches that fluctuated from island to island, which helped him to build up his hypothesis of characteristic selection. Darwin's finches are a traditional case of a versatile radiation. Their regular precursor touched base on the Galapagos around two million years prior. Amid the time that has passed Darwin's finches have advanced into 15 perceived species contrasting in body measure, snout shape, melody and sustaining conduct.

So, the correct option is 'Warblers and woodpeckers'.

Multiple choice biology evolution of life darwinism or theories of natural selection darwin's theory of evolution theories of evolution

Plants and animals  of Galapogoe islands resemble plants and animals of main land in

  1. North Africa

  2. North America

  3. South Africa

  4. South America
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
A Galápagos tortoise most nearly looks like South American tortoises. Disengaged on these remote islands, the Galápagos tortoise has developed unmistakable structures. 
A comparative likeness to territory feathered creatures can be found in an island finch Darwin never observed alone finch animal types living on Cocos Island, a modest, remote volcanic island found 630 kilometres toward the upper east of the Galápagos. This finch does not take after the finches of Europe, Australia, Africa, or North America. Rather, it looks like the finches of Costa Rica, 500 kilometres toward the east.
So, the correct option is 'South America'.