Question

The term evolution in biology means
A. Fossils are old
B. Life began in sea
C. Living things constantly change
D. Man descended from apes

Answer 1

Hint: In biology “evolution” means modification. According to modern concept, population is the basic unit of evolution and the gene pool modifies and diversifies upon which natural selection operates, this modification inherited to the next generation.

Complete answer:
Change in traits, features, and characteristics of an organism or a species over many generations is called evolution. Natural selection operates on heritable characters or the gene pool of a particular population. Evolution literally means a gradual change of something.
Living things or groups of species undergo various types of natural selection and with time they may involve several patterns of evolution. These changes become heritable and living beings evolve gradually by the change of heritable traits.
Groups of species undergo several types of natural selection and this may involve various patterns of evolution such as convergent evolution, divergent evolution, parallel evolution and coevolution.

Hence, the correct answer is option (C).

Additional information:
Natural selection is the primary mechanism responsible for change over time. Charles Darwin first proposed the concept of common descent and natural selection in his famous book, The Origin of Species in the year 1859. Evidence for evolution comes from different sources and various disciplines such as, fossils, biogeography, and law of superposition, artificial selection, vestigial organs, similarities, and overwhelming genetic evidence.

Note: Members of each species have to compete for their daily needs such as food, shelter, and other necessities to reproduce in a specific environment. Some individuals are better suited for the environment some may not. This unequal ability of individuals to survive and reproduce leads to a gradual change in a particular population with favorable characteristics for generations.