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WorksheetsEvidence of Evolution L3
Total questions: 21
Worksheet time: 15mins
Fossils provide evidence of organisms that lived in the past.
true
false
The wing of a bat has similar bones to those in a human arm.
true
false
DNA can tell us how closely related two organisms are.
true
false
Whales are descended from land-dwelling animals.
true
false
_ fossils form when small creatures are trapped in tree sap and the sap hardens.
Amber
Lumber
Timber
Red
The remains or imprints of once-living organisms are called _
fossils
records
remains
All of the fossils that have been discovered make up the _.
history of the world
fossil record
evidence chain
Fossils that help fill in the gaps between two groups of organisms are called _
helpful
fossil record
transitional fossils
A _ is the most recent species from which two different species have evolved.
structural DNA
common ancestor
primary ancestor
_, _, _, and _ all support the theory that populations change over time.
structural data
developmental patterns
fossils
DNA
fossil records
The _ of a human arm are similar in structure to the bones in the front limbs of a cat and a bat.
(a)
The greater the number of similarities between the molecules of any two species, the more recently the two species most likely shared a _
common ancestor
home
parent
_ is involved in cellular respiration.
cytochrome c
cytoplasmic DNA
cytocrome c
The study of development is called _.
embryology
scientific research
developmental studies
_ evidence shows that life on Earth has changed over time.
(a)
The remains of once-living organisms are called _.
fossils
amber
remains
_ in internal structures support evidence of common ancestry.
Similarities
Differences
The _ of modern whales are an example of unused structures.
tiny leg bones
large dorsal fins
Which word means "the remains or imprints of once-living organisms found in layers of rock?"
(a)
Which word means "the history of life in the geologic past as indicated by the imprints or remains of living things?"
(a)
Scientists have examined fossils of extinct species that have features in between whales and land mammals. These features are called _.
skeletal features
transitional characters
