WorksheetsLesson 44:Evolution
Total questions: 10
Worksheet time: 7mins
Scientists have used the (a) record to provide evidence for evolution, showing a sequence within Earth's rock layers from simple bacteria to more complex organisms through geologic time.
_______________ refers to having the same or similar relation.
descended
primary
original
homologous
Darwin observed that the variation in the beaks of finches living in the Galapagos Islands is useful for -
building a nest.
gathering food.
hatching eggs.
protecting their young.
A structure that seems to serve no purpose in an organism is called -
vestigial.
homologous.
fossilized.
divergent.
Vestigial structures have no apparent function in organisms. The presence of vestigial structures, however, seems to indicate that -
these organisms have similar habitat requirements.
structures change over time.
these organisms have a similar number of chromosomes.
these organisms have identical blood components.
A(n) (a) is a descendant; a child of a particular parent.
The concept of common descent relies on the fact that -
the gene pool naturally changes over time.
plants and animals in a specific environment typically have little diversity.
closely related organisms have more genes in common than distantly related organisms.
organisms with favorable traits are more likely to reproduce,
What is represented in the image above?
genetics
fossils
homology
vestigial structures
Select all answers below that describe scientific evidence supporting Darwin's theory of evolution.
Structures that serve little or no useful purpose in an organism
The distribution of plants and animals in a specific environment
Organisms that do not share common genes
Fossil documentation of the course of life through time
Select all statements that describe the theory of natural selection.
Organisms with favorable traits are more likely to survive.
It is the primary mechanism by which organisms change over time.
Organisms with favorable traits are less likely to reproduce.
It is also known as survival of the fittest.
