Question One Caytonia is an extinct plant that existed between 200 and 140 million years ago. It had reproductive structures that resemble structures.

Question One Caytonia is an extinct plant that existed between 200 and 140 million years ago. It had reproductive structures that resemble structures in modern flowering plants. How do scientists know about the structures of this ancient extinct plant?

Question one choices Scientists study the DNA sequences of Caytonia.
Scientists genetically engineer modern plants to produce Caytonia. Scientists excavate and examine the fossilized remains of Caytonia. Scientists observe the adaptations of plants in habitats resembling those of Caytonia.

Question Two __________________ structures are structures that share a common ancestry Vestigial Homologous Evolution monkey

Question three Starting in 1954, commercial fishers in the northwest Pacific were paid by weight, rather than by the individual fish, for pink salmon. The fishers increased the use of a type of net that selectively catches larger fish. Which of the following effects did this change in fishing techniques most likely have on the salmon population over the next 20 years?

Question three choices
The average body size of the salmon population increased significantly. The average body size of the salmon population decreased significantly. The average body size of the males in the salmon population increased and the average body size of females in the salmon population stayed the same. The average body size of the males in the salmon population stayed the same and the average body size of the females in the salmon population increased.

Question Four Which of the following is NOT a piece of evidence used to support the theory of evolution. a.) molecular biology b.) Darwin’s Galapagos finches c.) genetics d.) comparative anatomy

Question Five If a trait helps an animal to better survive and reproduce in its habitat this is called ___________. a.) natural selection b.) evolution c.) fitness d.) heredity

Question Six On the Galápagos Islands, finches adapted over time to different food sources through changes in their beak structure. Which of the following most likely resulted from the finches’ beak structure adaptations?

Question six choices a decreased predation on finches
an increased species diversity of finches an increased competition among finches a decreased reproductive rate in finches

Question seven Darwin once said we have “missing links” between species that could explain how we evolved from other species, today, how have we found these dead missing links exist? a.) natural selection b.) physiology c.) animals d.) fossils

Question eight The outermost tail feather of the male barn swallow is longer than that of the female barn swallow. The long tail feather helps the males attract females, but it also requires the males to use extra energy to fly. The long tail feather trait is maintained in the barn swallow populations because, compared to males with a shorter tail feather, males with a longer tail feather are more likely to ____________

Question eight choices
Build a large nest Produce offspring Migrate each winter Escape from predators

d.) derived characteristics
Question nine Darwin’s hypothesis about life changing over time is known as the Theory of _______________. a.) variation b.) evolution c.) use and disuse d.) derived characteristics

Question ten Frogs, lizards, and birds all have a similar arrangement of bones in their limbs. Which of the following does this similarity most likely indicate about these animals?

Question ten choices They move in the same way.
They have a common ancestor They evolved at the same time They are comparable in size as adults.

Question eleven Dutch elm disease is a fungal infection of elm trees that usually results in death. The disease has killed millions of North American elm trees that were not resistant to the fungus. Scientists have bred resistant elms by crossing North American species with Asian species that show resistance. Which of the following best describes how natural selection would promote resistant elm populations once the resistance genes from the Asian species were successfully introduced?

Question eleven choices
After encountering elms with resistance genes, fungi would avoid elms and begin to attack other tree species. Resistance would spread to all of the mature elms in a population from the few trees that acquired the resistance genes. By reproducing with each other elm trees with resistance genes would create super-resistant elms with twice the number of resistance genes. Elm trees with resistance genes would survive and pass on resistance to offspring, while trees without resistance would more likely be killed by the fungus.

Question twelve Which of the following provides the most conclusive evidence that organisms of two different species share a common ancestor? They live in the same ecosystem. They reproduce at the same time They have similar DNA sequences They have similar body movement

Question Thirteen Which of the following is an adaptation?
A cat’s sharp teeth A scar A paw print Giving birth to live offspring

Question Fourteen The illustrations below show vestigial pelvic bones of a baleen whale and vestigial hind limb bones of an extinct whale. The presence of these bones in the baleen whale and extinct whale provides evidence of which of the following?

Question fourteen choices
Whales can travel on land when necessary. Whales evolved from four legged animals Whales have functional legs that are hidden by fat and skin. Whales are developing into animals with four functioning limbs.

Question fifteen Similar structures are present in the embryos of fish, chickens, and rabbits. In fish, these structures develop into gills, but in chickens and rabbits, they either disappear or develop into other body parts later in embryonic development. Which of the statements below best explains the presence of these structures in the embryos of all three species?

Question fifteen choices
The embryos of the three species are similar in size Breathing structures are similar among the young of the three species. The three species have a common ancestor with these embryonic structures. The reproductive mechanisms are similar among the adults of the three species.

Question sixteen Which of the following clues provides clues about the size and structure of once-living organisms? Fossils DNA and molecular bio Vestigial structures Development of embryos

Question seventeen Industrial melanism leads to which change in a species? Decrease in dark color individuals Increase in dark color individuals Decrease in size of individuals Increase in size of individuals

Question eighteen Once a species has become ________ there is no chance of it returning. Most likely their habitat changed and they were not able to adapt to those changes. Population Extinct Speciation Industrial melanism

Question nineteen During reproductive isolation, The ability of formerly interbreeding groups to mate or produce fertile offspring, which of the following also occurs? A. Industrial melanism B. Divergence C. Speciation D. Both B and C

Question Twenty In a mouse population inhabiting a grassland area, a mutation occurs that results in a new coat color allele. Which of the following factors has the greatest effect on whether the new coat color will become more common in the mouse population?

Question twenty choices
whether abundant food is available in the grassland whether the new coat color allele is dominant or recessive whether the rate of reproduction in the mouse population is stable whether the new coat color allele increases the survival of mice in their environment

Question One Caytonia is an extinct plant that existed between 200 and 140 million years ago. It had reproductive structures that resemble structures.

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Question One Caytonia is an extinct plant that existed between 200 and 140 million years ago. It had reproductive structures that resemble structures.

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Presentation on theme: "Question One Caytonia is an extinct plant that existed between 200 and 140 million years ago. It had reproductive structures that resemble structures."— Presentation transcript:

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