Tag: theories of evolution

Questions Related to theories of evolution

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

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

  1. Mutation theory of Hugo de Vires

  2. Lamarck's theory of acquired characters

  3. Malthus idea of population control

  4. Environmental factors

Show answer
Correct Option: C
Explanation:

One of his persuasions was Thomas Robert Malthus, a late-eighteenth-century financial analyst. Malthus stated is "Essay on the Principle of Population" (1798), which Darwin read and was roused.

So, the correct option is 'Malthus idea of population control'.

Choose the correct answers from the alternatives given.
Darwin believed that a giraffe has a long neck because

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

  1. God designed it that way

  2. catastrophes eliminated short-necked forms

  3. its ancestors stretched their necks to get food

  4. ancestral giraffes with slightly longer necks got more food than others and left more surviving offspring

Show answer
Correct Option: D
Explanation:

According to Darwin theory, there is both long and short neck giraffe due variation in the population. when there is a shortage of short tree leaves, short neck giraffe died and long neck giraffe survive.

Hence, the correct answer is 'ancestral giraffes with slightly longer necks got more food than others and left more surviving offspring'