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WorksheetsEvolutionary History Amplify Vocab
Total questions: 36
Worksheet time: 22mins
Which species (H, I, or K) is the closest relative to Species J?
Species H
Species I
Species K
Neither
a body structure in two or more species that features the same parts
shared structure
speciation
species
ancestor population
The mystery fossil
a more recent species that evolved from an ancestor population
common ancestor population
paleontologist
species
descendant species
The body structures for a population of chimpanzees were stable for a long time. Then, their body structures changed, making the chimpanzees stronger. Why did this happen?
Organisms naturally become stronger over time.
It is impossible to say without more information.
The chimpanzee population wanted to be stronger.
Their environment must have changed.
Do you think the two species have a common ancestor?
NO
YES
an older population from which two or more newer species descended
descendant species
paleontologist
common ancestor population
shared structure
Two students were challenged with taking imaginary species and placing them on an evolutionary tree. Their models are shown below. Inspect the models and then answer the questions.
Which model do you think is correct?
Neither
Imagine a population of frogs that live in the forest. The frogs have a green coloring on top that helps them blend into the forest so they are not noticed by predators.
Imagine that half of this population stayed in the forest and the other half of the population moved to the hills above the forest, which are drier, with some brown grass and brown soil.
Which population of frogs is likely to have more changes after many generations?
Descendant Species 1: The frogs in the brown hills.
Descendant Species 2: The frogs in the green forest.
Neither.
the process by which one population evolves into two or more different species
paleontologist
speciation
descendant species
species
Which descendant species is most likely to have body structures that are the most different from Descendant Species B? Select 2
Descendant Species A
Descendant Species C
Descendant Species D
a scientist who studies fossils in order to understand the ancient history of life on Earth
descendant species
shared structure
paleontologist
speciation
What is a related organism from a previous generation?
an adaptive trait
an ancestor
a descendant
a generation
What is the process by which species adapt to environmental changes over a very long time ?
evolution
a common ancestor population
speciation
a generation
What is a group of individuals born and living at about the same time?
an adaptive trait
an ancestor
a descendant
a generation
What is an example of a shared body structure?
the distal bones in a whale and the distal bones in a wolf
the distal bones in a whale and the pelvis in a whale
the distal bones in a whale and the pelvis in a wolf
the pelvis in a wolf and the distal bones in a wolf
Fill in the blanks: Species (blank) their body structures from their (blank) populations.
evolve, previous
inherit, descendant
inherit, ancestor
evolve, descendant
What is a descendant population?
the process by which one population evolves into two or more different species
a group of the same type of organism living in the same area
an older population from which two or more newer species descended
a more recent species that evolved from an ancestor population
What is speciation?
the process by which one population evolves into two or more different species
a group of the same type of organism living in the same area
an older population from which two or more newer species descended
a more recent species that evolved from an ancestor population
What is a group of organisms of the same kind (in one or more populations) that do not reproduce with organisms from any other group
a generation
a species
a population
an ancestor
Both of these animals share a common trait, that they produce milk for their babies. What best explains why both have structures that create milk?
The whale and the human are different species, so they must not share an ancestor population. They inherited their milk creating structure from separate ancestor populations.
The whale and the human both share the same ancestor population that had milk producing structures. They inherited this structure from the ancestor population.
It is impossible to say. Fossils are very old; therefore, we cannot make observations of the common ancestors, and we cannot explain its body structures.
All species have their own specific body structures, so it is a coincidence that this human and whale each happen to have the ability to produce milk.
This human and this bat both have hand bones in their front limbs. However, their f bones are very different. The red bathas long finger bones that help it to fly. The human has short fingerr bones that help grab things. What most likely explains why both have front limbs with a hand bones and why the bones are different?
different species, so they do not share an ancestor population. These species had separate ancestor populations, and each evolved hand bones that help it survive in its environment.
It is impossible to explain the structures of different species. The way that structures change over time is very complex, and no one has ever observed these changes occurring.
both inherited the bones from a shared ancestor population, but this population separated into different environments. In each environment, different types of handr bone evolved, which helped the populations survive.
Define Adaptive Trait
A trait that allows something to adapt to a lot of different situations
a trait that allows individuals to survive in a specific envionment
a trait that changes as an individual grows up
Which one of these numbers represents the ancestor population to Zebrafish and Humans?
450
90
360
110
Why is Environment important to evolution?
It is where animals choose to live
It causes mutations
It decides which traits can survive and make babies
It makes mutations happen more often
What is a paleontologist?
an individual that follows a paleo diet
a person who lived in the distant past
a scientist who studies fossils to understand Earth's history
an organism that was once alive, but is now extinct
What does this diagram show?
All three species share a common ancestor, but the African elephant and Sumatran tiger are more closely related to each other than they are to the Norway rat.
All three species share a common ancestor, but the Sumatran tiger and Norway rat are more closely related to each other than they are to the African elephant.
The Sumatran tiger, African elephant, and Norway rat are not related and come from separate lines of evolutionary history.
All three species share a common ancestor and are equally related to each other.
Shared Structures always come from
random chance
two different species in a similar environment
a common ancestor
species structures are entirely unique.
Select all examples of a Body Structure:
Skull
Arm
Leg
Heart
What does it mean to inherit?
To receive things from a parent
To Get a trait from the environment
Why do only grizzly bears and sea otters have canine teeth?
They must have mated with canines to earn canine teeth
It could be that they grow them as they eat more meat
Because they lived in an environment where canine teeth were really important
Rabbits would have them too, but they just lost them after splitting from the common ancestor
What structure did the common ancestor have?
Scapula bone in shoulder
Three bones in inside ear
Two bones in inside ear
Five toes in each back limb
Is the new fossil more closely related to the Hippopotamus or the Green Iguana?
The Hippopotamus, because they bother have the scapula in the shoulder
The Hippopotamus, because they both have three bones inside the ear
The Green Iguana, because they both have the scapula bone in the shoulder
The Green Iguana, because they both have five toes on the back limb
Which of these animals are the most closely related?
The Desert Cottontail and The Grizzly Bear, because they are both mammals and give milk to their babies
The Sea Otter and the Desert Cottontail, because they are both much smaller than the bear
The Grizzly Bear and the Sea Otter, because they both share a backbone and canine teeth
All three animals are equally related
Which Traits did the Common Ancestor have? select all that apply
Tibia Bone
Lays eggs
scale
fur
Which of these animals are more closely related?
The turtle and the Siamang because they both give live birth
The Flamingo and the Siamang, because they fur and feathers are more similar that feathers and scales
The flamingo and the turtle, because they both have a tibia bone and lay eggs
All three animals are equally related
