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WorksheetsCA Review Unit 1
Total questions: 10
Worksheet time: 20mins
Which organisms are most closely related?
Equus caballas (Horse) & Equus burchellii (Zebra)
Cyanea artica (Jellyfish) &
Ctenodiscus crispatus (Mud Starfish)
Ophiocomina nigra (black brittle star) & Brassica nigra (black mustard)
A dichotomous key for trees is provided. Hikers found a tree that has large brown cones and single sharp needles. What species of tree have the hikers found?
Juniper
Spruce
Fir
Why is the mouse population changing over time?
The light mice can reproduce more successfully than the dark mice
The hawks eat more dark mice than light mice because the dark mice taste better
The hawks eat more light mice than dark mice because they can see the light mice more easily
The graphs below show the changes in crab color at one beach.
Which of the following is most likely to have caused the change in the distribution?
A new predator arrived that preferred dark-tan crabs.
A new predator arrived that preferred light-tan crabs.
A change in beach color made medium-tan crabs the most visible to predators.
What is the most likely explanation of the data shown below?
The moths are living in an environment with dark trees.
The population of natural predators of the moths has gotten smaller.
The moths are living in an environment with light trees.
You look at two species and see very similar amino acid sequences. What does this likely tell you?
These animals are likely becoming one species.
These animals have a common ancestor.
These animals are not likely related.
On the cladogram, which organism is the closest relative of the human?
Frog
Hare
Caiman
Why is genetic diversity important?
Genetic diversity allows for some organisms to adapt and survive when the environment changes
Genetic diversity ensures all organisms are equally fit
Genetic diversity prevents harmful mutations from occurring in the population
Scientists are studying the evolutionary history of a group of plants in the United States, and they developed a cladogram, as shown below.
What information about the organisms best helps the scientists to build the cladogram?
DNA sequences
Anatomical features
Habitat types
