TEKS Science Grade 7 - Topic: 7.10-7.14 Organisms and Environments
Quiz by Texas Education Agency
Grade 7
Science (2010)
Texas Essential Knowledge and Skills (TEKS)
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19 questions
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- Q1Some dairy farmers want to increase the amount of milk produced by their cows. How can the farmers use selective breeding to increase milk production?By choosing cows that are high milk producersBy choosing cows that can produce milk after eating the most foodBy limiting the number of offspring per cowBy increasing the age of the cows that are bred300s7.11.C: Organisms and Environments
- Q2Certain species of whiptail lizards have only female individuals and no males. These lizards reproduce asexually. What is one disadvantage of asexual reproduction for these lizards?A new population can be established by a single individual in a relatively short period of time.They are more likely to develop a variety of tail lengths.All the members of a population are genetically very similar and less able to survive environmental changes.They are smaller than lizards that reproduce sexually.300s7.14.B: Organisms and Environments
- Q3Some students collected leaf samples. The students used the leaf identification key shown below to identify a leaf sample. Based on the identification key, which type of tree is this sample from?Honey locustHorse chestnutGinkgoBlack maple300s7.11.A: Organisms and Environments
- Q4Some students take care of a vegetable garden. When it is time to plant in the spring, the students leave part of the garden empty in order to observe ecological succession. Which of these will most likely occur first?Development of topsoilGrowth of weeds and grassesDevelopment of a streamGrowth of trees and shrubs300s7.10.C: Organisms and Environments
- Q5Plants use energy from sunlight, water, and carbon dioxide to produce sugar. Which structure is found only in plant cells and helps plants capture energy from sunlight?NucleusCell membraneChloroplastVacuole300s7.12.D: Organisms and Environments
- Q6A student drew the picture of a human body system shown below. The student labeled some of the organs of the system. The main function of this human body system is to —exchange gases with the environmentsense odors in the environmentchew food as it enters the mouthtrap particles that enter the nose300s7.12.B: Organisms and Environments
- Q7Tropical rain forests have the greatest biodiversity of any type of land ecosystem. How does biodiversity contribute to the sustainability of an ecosystem?The presence of a variety of herbivore species that can feed on a large number of different producer species helps ensure abundant prey for predators in the ecosystem.All of the aboveThe presence of more species with different adaptations makes it more likely that some organisms will survive an ecological disaster.Greater genetic variation within species makes it more likely that some individuals will survive a disease outbreak.300s7.10.B: Organisms and Environments
- Q8Three cousins have a similar appearance but different face shapes. Which of these cell components are most involved in determining the basic shape of each girl’s face?Genes, chromosomes, and nucleusChromosomes, chloroplasts, and vacuolesCytoplasm, chloroplasts, and genesVacuoles, nucleus, and chromosomes300s7.14.C: Organisms and Environments
- Q9Part of a human body system is pictured. The main function of this system is to —transport oxygenremove wastecontrol reproductionproduce hormones300s7.12.B: Organisms and Environments
- Q10The diagram below shows parts of a cell. Which organelle stores the information that determines an individual’s blood type?Organelle 2Organelle 1Organelle 4Organelle 3300s7.14.C: Organisms and Environments
- Q11Students in a science class visited four local ecosystems. The students observed the species present in each ecosystem and recorded their observations in the table. Based on these observations, which ecosystem is likely to be the least sustainable?Ecosystem 3, because it has few predatorsEcosystem 4, because it supports many animalsEcosystem 1, because it has the fewest speciesEcosystem 2, because it includes both aquatic and terrestrial species300s7.10.B: Organisms and Environments
- Q12When Charles Darwin visited the Galápagos Islands in the 1800s, he observed many types of organisms that were similar but lived on different islands. The four species of mockingbirds found on the Galápagos Islands are shown below. Each species lives on a different island. These species are very similar, but the Hood mockingbird has a longer beak than the other three species. Which of the following best explains this difference?The Hood mockingbird’s longer beak is an adaptation to the food available in the bird’shabitat.The Hood mockingbird needs a longer beak for defense against predators.The Hood mockingbird’s beak stretched to reach its food, and the longer beak was passed down to its offspring.The Hood mockingbird originated from a different type of bird than the other species.300s7.11.C: Organisms and Environments
- Q13When people run long distances, their muscles require increased amounts of oxygen. Which system is responsible for carrying this oxygen to the muscles?CirculatoryNervousDigestiveRespiratory300s7.12.B: Organisms and Environments
- Q14In 1838 botanist Matthias Schleiden determined that all plants are composed of cells. In 1839 anatomist Theodor Schwann proposed that all animals are composed of cells. In 1855 biologist Rudolph Virchow added to Schleiden’s and Schwann’s observations and proposed that all living things are composed of cells. Which statement is also part of Virchow’s cell theory?All cells have a cell wall.All cells can develop into any other type of cell.All cells are capable of photosynthesis.All cells arise from pre-existing cells.300s7.12.F: Organisms and Environments
- Q15The hydra is a very small, simple animal that lives in water. Hydras reproduce asexually by budding, a process in which a bud breaks off an adult hydra and floats away. Which of the following best describes a hydra bud?A hydra bud contains genetic material from its two parents.A hydra bud has half as much genetic material as the parent hydra.A hydra bud has different mutations than the parent hydra.A hydra bud is genetically identical to the parent hydra.300s7.14.B: Organisms and Environments
