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Flashcards by Elexali Olayvar, updated more than 1 year ago
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Created by Elexali Olayvar
about 5 years ago
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| Question | Answer |
| A meter is an SI unit. Which quantity might you measure in meters? A. temperature B. mass C. length D. electric current | C. length |
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| Which of the following is least likely to be a scientific experiment? A. Leo places one plant in direct sunlight and two others in the shade. He observes them for 10 days. B. Carmen changes the weight on the end of a pendulum. She notes each time how long it takes the pendulum to cycle. C. Byron checks the pH level in 10 water samples. He maps the reading to the location where he took the sample. D. Emma trims the stems of a bouquet of flowers. She places the flowers in a vase on the dining table. | D. Emma trims the stems of a bouquet of flowers. She places the flowers in a vase on the dining table. |
| Which statements are true? - Science is a collection of facts that does not evolve. We have gained all the knowledge we can from science. - Scientists observe natural events occurring around them. They question these observations and investigate them. - All scientists follow one scientific method of investigation. - If a hypothesis is not verified by the results from the scientific method, scientists may either redo the process or create a new hypothesis. - Once they reach a conclusion, scientists often keep the results to themselves. | - Scientists observe natural events occurring around them. They question these observations and investigate them. - If a hypothesis is not verified by the results from the scientific method, scientists may either redo the process or create a new hypothesis. |
| A white rooster mates with a black hen. The offspring is gray in color. What is this phenomenon called? A. codominance B. coinheritance C. incomplete dominance D. single gene dominant/recessive trait | C. incomplete dominance |
| In pea plants, round seeds are dominant and wrinkled seeds are recessive. A pea plant with round seeds was pollinated with a pea plant with wrinkled seeds. The offspring produced round seeds. One of the offspring was mated with a pea plant with heterozygous genes for round seeds. What are the chances that the offspring will have wrinkled seeds? There is a ______ percent chance that the offspring will have wrinkled seeds. | 25 |
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| Axial flowers are a dominant trait in pea plants, and terminal flowers are a recessive trait. Which genotype represents a plant that has homozygous dominant genes for axial flowers? A. aa B. Aa C. AA D. AAaa | C. AA |
| Human blood consists of blood groups A, B, and O. However, there is one more blood group, AB, which contains alleles A and B in the same genotype. What is this phenomenon called? A. coinheritance B. codominance C. incomplete dominance D. polygenic inheritance | B. codominance |
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Because of genetic variation, a species of beetle has two different body colors, red and green. This species exists in a grassy environment that’s mostly green. A new species of bird that eats these beetles enters the area. Arrange the steps of natural selection in the correct order.
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| The area around the Sahara Desert is slowly changing into a dry region, similar to the desert. Which trait is most likely to be selected in the population of plants growing in this region? A. trait encoding for short plant structure to reduce transport of water B. trait encoding for thick bark on trees C. trait encoding for increased leaf size to increase photosynthesis D. trait encoding for fruits with toxins to evade animals | A. trait encoding for short plant structure to reduce transport of water |
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C. Turtles with genes for long necks had a better chance of surviving to reach reproductive age. |
| Pointed teeth help tear apart food, and large, flat teeth are used to grind food. Based on this information, what types of teeth are characteristic of animals that eat plants and animals that eat other animals? A. Animals that eat plants have more pointed teeth because they eat grass and leaves. Animals that eat other animals have more flat teeth because they eat meat. B. Animals that eat plants have more flat teeth because they eat grass and leaves. Animals that eat other animals have more pointed teeth because they eat meat. C. Animals that eat plants and animals that eat other animals both have more flat teeth. D. Animals that eat plants and animals that eat other animals both have more pointed teeth. | B. Animals that eat plants have more flat teeth because they eat grass and leaves. Animals that eat other animals have more pointed teeth because they eat meat. |
| A snake sheds its skin frequently. This action is an example of a ________ adaptation. This adaptation helps the snake with _________. | functional, proper growth |
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Which trait is solely dependent on its environment?
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a dog's tendency to bark |
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Ralph wanted to breed a pea plant that produced only purple flowers. He continued to breed purple-flower producing pea plants together over six generations. The results of Ralph's artificial selection are shown above. What did artificial selection do to the population of pea plants?
A. caused a new species of pea plant to form
B. increased its genetic diversity
C. decreased its genetic diversity
D. caused a pea plant to exhibit a new characteristic
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C. decreased its genetic diversity |
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| A farmer mated two ducks. They produced three offspring. Two of the offspring were then selected to mate with each other because they had desirable traits. What’s the term used for this type of mating? A. cloning B. GMO C. inbreeding D. natural selection | C. inbreeding |
| A natural disaster caused a population of 4,695 organisms to migrate to a new habitat. A few generations after the disaster, it was observed that the new habitat did not support the survival of the species. The table shows the population of the species in the two habitats. Original Habitat New Habitat 4,695 2,326 Based on the table, the population in the new habitat is about _____ percent of the original population. | 50 |
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A |
| Hair color is a trait that’s controlled by many genes working together. Each gene contributes to this trait only in a small proportion. Which pattern of inheritance is this? A. codominance B. incomplete dominance C. multiple allele D. polygenic inheritance | D. polygenic inheritance |
| Which sentence describes a sex-limited trait? A. Stags have more prominent antlers than does. B. A pink-colored flower is the offspring of a red and white flower. C. Several alleles control gene type. D. The height of a person is controlled by many genes. | A. Stags have more prominent antlers than does. |
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