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TEKS Grade 7 Science - 7.10.C Ecological Succession

Quiz by Texas Education Agency

Grade 7
Science (2017)
Texas Essential Knowledge and Skills (TEKS)

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Measures 1 skill from
Grade 7
Science (2017)
Texas Essential Knowledge and Skills (TEKS)


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3 questions
Show answers
  • Q1
    Some 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 topsoil
    Growth of weeds and grasses
    Development of a stream
    Growth of trees and shrubs
  • Q2
    Both primary and secondary succession begin with pioneer species that —
    invade the area so that new organisms cannot be established
    modify the area and allow larger and more complex organisms to appear
    use up all the existing resources and prevent establishment of non-native organisms
    change the area and make it safer from predatory organisms
  • Q3
    Students 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?
    Question Image
    Ecosystem 1, because it has the fewest species
    Ecosystem 2, because it includes both aquatic and terrestrial species
    Ecosystem 4, because it supports many animals
    Ecosystem 3, because it has few predators

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