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WorksheetsEvolution & Classification - Released EOC 2019
Total questions: 10
Worksheet time: 5mins
Which substance do biochemists often search for in fossils to help better understand the evolutionary relationships of the organism that formed the fossil?
ATP
DNA
iron
oxygen
Scientists believe that the polar bear in Alaska and the brown bear in Russia evolved from a common ancestor. Which would be responsible for this evolutionary change?
artificial selection
asexual reproduction
sexual competition
geographic isolation
What is the basis for the earliest classification system of organisms?
physical characteristics
differences in habitats
evolutionary relationships
reproductive patterns
An antibiotic which was effective 20 years ago against a specific type of bacterial infection no longer works against the same kind of infection today. Which best explains why the antibiotic is no longer as effective as it was 20 years ago?
Bacteria resistant to the antibiotic have killed off nonresistant bacteria.
Viruses have changed the structure of the bacteria that causes the infection.
Resistant bacteria have survived and reproduced at a greater rate than nonresistant bacteria.
The human body has developed an immunity to the antibiotics.
An insecticide kills most of the ants on a plant. Over time, it is determined that the insecticide is not as effective for killing ants. Which statement best explains this observation?
The ants killed by the insecticide and the surviving ants were genetically different.
The ants that survived were younger than those that died as a result of the insecticide..
The ants killed initially by the insecticide had thinner cell membranes than the surviving ants.
The ants killed by the insecticide and the surviving ants were genetically the same.
Multicellular eukaryotic autotrophs belong to which kingdom?
Animalia
Fungi
Plantae
Protista
Some marine worms and mollusks go through similar larval stages during development. Which can be inferred about their relationship?
They share a common ancestor.
They mate with each other.
They compete for a habitat.
They share the same food source.
Which statement best describes natural selection?
Small organisms are more likely to survive than larger organisms.
Organisms better adapted to their environment are more likely to reproduce and pass on their traits to their offspring.
Organisms that eat only plants need less food than organisms that eat animals.
As the weather changes, organisms that are able to find shelter need less energy to live.
Some scientists claim recent evidence suggests birds should be reclassified to share more taxonomic groups with dinosaurs. What type of evidence would provide the best support for this claim?
evidence showing birds shared similar habitats with dinosaurs
evidence showing birds shared similar nutritional requirements as dinosaurs
evidence showing birds shared similar behaviors with dinosaurs
evidence showing birds shared a common genetic history with dinosaurs
This is a dichotomous key for selected arthropods. This diagram shows a caddis fly. To which order does the caddis fly belong?
Acarina
Diptera
Siphonaptera
Trichoptera
