Free MCQs & Online Quiz Practice for Exams

Q: The existing species are the modified descendants of pre-existing ones according to

A) Theory of special creation

B) theory of organic evolution

C) uniformitarianism

D) theory of catastrophe

Q: Using the Hardy-Weinberg Principle which expression represents the frequency of the homozygous recessive genotype?

A) p²

B) 2pq

C) q²

D) q

Q: Which one of the following would cause the Hardy-Weinberg principle to be inaccurate?

A) The size of the population is very large

B) Individuals mate with one another at random

C) Natural selection is present

D) There is no source of new copies of alleles from outside the population

Q: Similarity in characteristics resulting from common ancestry is known as

A) Analogy

B) Homology

C) Evolutionary relationship

D) Phylogeny

Q: The parts of the body used extensively to cope with the environment become larger and stronger while those that are not used deteriorate was argued by

A) Charles Darwin

B) Alfred Wallace

C) Carolus Linnaeus

D) Lamarck

Q: The process of evolution of different species in a given area starting from a point and spreading to other geographical areas is known as

A) Adaptive radiation

B) Migration

C) Divergent evolution

D) Natural selection

Q: The idea of Natural selection as the fundamental process of evolutionary changes was reached

A) Independently by Charles Darwin and Alfred Russel Wallace in 1900

B) By Charles Darwin in 1866

C) By Alfred Russel Wallace in 1901

D) Independently by Charles Darwin and Alfred Russel Wallace in 1859

Q: When two species of different genealogy come to resemble each other as a result of adaptation the phenomenon is termed

A) Microevolution

B) Divergent evolution

C) Convergent evolution

D) Co-evolution

Q: Which of the following organic compounds first evolved and later were required for origin of life on Earth?

A) Proteins and Amino acids

B) Proteins and Nucleic acids

C) Urea and Amino acids

D) Urea and Nucleic acids

Q: Which of the following statement is correct for analogous structures?

A) Anatomically similar and functioning similarly

B) Anatomically similar but performing different functions

C) Anatomically different but performing similar functions

D) Anatomically different and functioning differently

Q: Which one of the following pairs represents analogous features?

A) Elephant tusks & Human incisors

B) Insect wings & Bat wings

C) Mammal forelimb & Bird wing

D) Reptilian heart & Mammalian heart

Q: Which of the following ideas was not part of Charles Darwin's theory of evolution by natural selection?

A) Organisms produce more offspring than the environment can support

B) Variation between individuals arises by gene mutation

C) Only those individuals that are best adapted survive and reproduce

D) Individuals compete for space and resources

Q: The random loss of alleles in a population is called______________

A) Mutation

B) Selection

C) Gene flow

D) Genetic drift

Q: Which of the following requires maximum energy?

A) Secondary consumer

B) Decomposer

C) Primary consumer

D) Primary producer

Q: What is the direction of energy flow in an ecosystem?

A) Always unidirectional

B) Always bidirectional

C) In any direction

D) Always down directional

Q: Which one is an example of non-denitrifying bacteria?

A) Pseudomonas aeruginosa

B) Thiobacillus

C) Thiobacillus denitrificans

D) Bacillus ramosus

Q: The term used to express a community in its final stage of succession?

A) End community

B) Final community

C) Climax community

D) Dark community

Q: Identify the term in which all the living organisms that occupy an area undergoing primary succession in the beginning stages?

A) Climax community

B) Settled community

C) Dense community

D) Pioneer community

Q: In which of the following process older communities of plants and animals are replaced by newer communities?

A) Evolution

B) Deforestation

C) Forestation

D) Ecological succession

Q: Exponential growth occurs when there is

A) A great environmental resistance

B) No environmental resistance

C) No biotic potential

D) A fixed carrying capacity