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WorksheetsEvolution Practice
Total questions: 15
Worksheet time: 8mins
Gigantopithecus were very large primates that lived 500,000 years ago. Since none of these mammals are still today, they are said to be....
Extinct
Threatened
Endangered
Declining
Sometimes bones in the front limbs of animals are very similar in structure. What do we call similar bone structures that indicate a link to a common ancestor?
Adaptations
Gradualism
Homologous Structures
Extinction
When looking at two birds of the same species, you notice that one has darker feathers than the other one. You also notice that one has a beak that is just a little longer. These slight differences within members of the same species are called.....
Fossils
Extinction
Meiosis
Variations
What is the study of organisms at the early stages of development?
DNA studies
Comparative Embryology
Extinction
Fossil Record
Birds are eating all the green beetles. Because the brown beetles are surviving they reproduce more and make more brown beetles. This is called ___________
Artificial Selection
The Theory on the Origin of Species
Natural Selection
Mutation
If scientists find fossils of a type of mosquito on the bottom layer and find fossils of beetles towards the top layer, what can scientists infer?
Mosquitos ate the beetles
Mosquitos are older fossils than beetles
Beetles are older fossils than mosquitos
Both mosquitos and Beetles must have lived at the same time.
When we examine this whale fossil, we can see that the whale has a pelvic bone that doesn't seem to be used by the whale. What do scientists infer?
The whale had an ancestor with legs
The whale must use the pelvis for an unknown reason
The whale was born with an extra bone and has a disorder
The whale had an ancestor with wings
This diagram of the fossil record represents changes in mollusks over millions of years.
How can the pattern of changes in the fossil record best be explained?
the mollusks were well adapted to their stable environment. A large sudden change occurred in their environment. After the changes, the mollusk with the bigger shells was better adapted to the new environment.
the mollusks were well adapted to their stable environment. the mollusks hybridized with a smaller species of mollusk. A new species of mollusk with a bigger shell resulted.
the mollusks were not well adapted to their environment. the length of the mollusk's shells changed gradually over time. The mollusks in the original population that has small shells died over a period of many years.
the mollusks were well adapted to their environment. humans introduced a new species of mollusk that was not adapted to this environment. the introduced mollusk outcompeted the native mollusk species.
SELECT ALL THAT APPLY: Which of the following must be true in order for organisms to be considered the same species?
They must be able to mate
They must be able to produce viable offspring
They must have structural similaries
They must have the same bone structure
The fossil record help scientists
better understand the kinds of organisms that lived in the past
better understand how the environment has changed over time
better understand how organisms have evolved over time
all of the above
_______________, or selective breeding, is one way that humans impact evolution. One example is how the Belgian Blue cow has been bred to have greater muscle mass.
Artificial selection
Homologous
Natural selection
Meiosis
