Free Evolution MCQs with Answers
814 Evolution MCQs from Biology, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Evolution describes heritable change in populations over generations through variation, natural selection and adaptation. Lamarckism explains inheritance of acquired characteristics, while Darwinism explains selection of favourable inherited variations; these historical explanations must not be confused with the modern genetic account of evolutionary change.
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Read the Evolution notesFree MDCAT chapter notes with key terms814 questions · page 40 of 41
- A. Organisms ranged from simple to complex.
- B. One type of organism gives rise to another type of organism.
- C. Both a and b.
- D. All living things are specially created by nature.
Explanation: During Aristotle's time, it was though that organisms ranged from simple to complex. All other options are incorrect.
Correct answer: Organisms ranged from simple to complex.- A. Organisms ranged from simple to complex
- B. One type of organism gives rise to another type of organism
- C. Both Options A and B are correct
- D. Only living things are created by nature
Explanation: In Aristotle's time, with respect to the theory of inheritance, it was already known that organisms varied on the basis of their…
Correct answer: Both Options A and B are correct- A. More offspring than can be supported
- B. Offspring according to the available resources
- C. Just the right amount of offspring
- D. Offspring to create more resources
- E. Less offspring than can be supported
Explanation: Explanation for this question will be added soon.
Correct answer: More offspring than can be supported- A. Lamark
- B. Linnaeus
- C. Hardy-Weinberg
- D. Darwin
Explanation: The theory of natural selection was explored by 19th-century naturalist Charles Darwin.
Correct answer: Darwin- A. i only
- B. i, ii & iii
- C. i & iv
- D. ii, iii & v
- E. i, ii, iii & v
Explanation: Explanation for this question will be added soon.
Correct answer: ii, iii & v- A. Lamarck
- B. Darwin
- C. Weismann
- D. De Vries
Explanation: Lamarckism is a theory of evolution based on the principle that physical changes in organisms during their lifetime.
Correct answer: Lamarck- A. Analogous.
- B. Homologous.
- C. Unilogous.
- D. Hypologous.
Explanation: Homologous organs are defined as the organs of different animals that are having a similar structure but differ in their functions.
Correct answer: Homologous.- A. DNA and proteins
- B. DNA and gene
- C. RNAs and proteins
- D. DNA and RNAs
Explanation: Explanation:Evolutionary relationships among species are reflected in their DNA and proteins - in their genes and gene products.
Correct answer: DNA and proteins789. If all the members of a population are homozygous for the same allele, that allele is said to be:
- A. Random in population's pool
- B. Random in a species
- C. Fixed in population's pool
- D. Fixed in the gene pool
Explanation: Explanation:If all individuals in a population are homozygous for the same allele, then that allele is fixed in the population's gene…
Correct answer: Fixed in the gene pool- A. Haemoglobin
- B. Myoglobin
- C. Cytochrome c
- D. Pilin
Explanation: [A] Haemoglobin is not found in aerobic bacteria only in man[B] Myoglobin is found in man only[C] found in both man and aerobic bacteria s…
Correct answer: Cytochrome c- A. Embryology Record
- B. Molecular Record
- C. Biochemical Record
- D. Fossil Record
Explanation: Fossils are important evidence for evolution because they show that life on earth was once different from life found on earth today.
Correct answer: Fossil Record- A. Homologous
- B. Analogous
- C. Vestigial
- D. Fossilized
Explanation: Homologous organs can be defined as the organs of different animals that are similar in structure but perform different functions.
Correct answer: Homologous- A. Development of branchial arches invertebrate embryo.
- B. Distribution of species
- C. Comparison of genes and proteins in different species
- D. Study of vestigial organs
Explanation: To compare species to see how they have evolved differently, we look at their gene sequences or the amino acid sequence of essential…
Correct answer: Comparison of genes and proteins in different species- A. Hardy-Weinberg Theorem
- B. Mendel's law of independent assortment
- C. Mendel's law of segregation
- D. Theory presented by Schleiden and Schwann
Explanation: Hardy-Weinberg Theorem allows us to calculate the allele frequency in populations where the phenotype that we are examining is the same…
Correct answer: Hardy-Weinberg Theorem- A. Its genetic constitution
- B. Its ability to over-produce
- C. Its ability to acquire characters
- D. Its ability to over-eat
Explanation: According to Darwin's theory of natural selection, the survival of an organism is influenced by its genetic constitution.
Correct answer: Its genetic constitution- A. Introduction of heterospory
- B. Rentantion of the megaspore within megasporangium
- C. Fertilization of the egg prior to discharge.
- D. All of the above
Explanation: All of the options given in the question are correct as there are various steps involved in the evolution of seed habit which are as…
Correct answer: All of the above- A. Appendix
- B. Leg muscles
- C. Coccyx
- D. Nictitating membrane
Explanation: Vestigial organs are rudimentary anatomical structures that are retained in a species despite having lost their primary ancestral…
Correct answer: Leg muscles- A. Homologous
- B. Analogous
- C. Acquired
- D. Vestigial
Explanation: These are the organs that have similar anatomical structures but perform different functions.
Correct answer: Homologous- A. Equus
- B. Eohippus
- C. Mesohippus
- D. Merychippus
Explanation: The modern horse is called Equus caballus.
Correct answer: Equus- A. Digestion
- B. Excretion
- C. Immunity
- D. Movement
Explanation: The appendix has been found to play a role in mammalian mucosal immune function.
Correct answer: Immunity