Soal Ulangan Semester 2 Biologi Kelas 7 RSBI

BIOLOGY (7 RSBI)

Choose the right answer

Complete this sentences below!

  1. Consist of bacteria and saprophytic fungi which act to break down and transform organic substances into an inorganic substances¬† (………………………….)
  2. Reciprocal relationships between a group of communities and its surrondings (………………………)
  3. The correct method to solve overpopulation (…………………………………)
  4. Famine, war, diseases are the cotrolling factors of natural population growth (……………………….)
  5. (………………………….) is the main pollutant causing the greenhouse effect and global warming.
  6. (………………….)causes damage in soil structure, landslides, flash floods, and declining biodiversity.
  7. If sulphur dioxide and nitrogen oxidedissilve in rainwater, they will create (…………………)
  8. Environmental pollution can be distinguished into the polution of (………..), (………..) and (…………)
  9. ………….. is a group of several food chains which are interconnected to the another.
  10. Pollutant that can cause acid rain (………….)

Answer the questions below correctly!

  1. Pay attention to the following food web!
  1. How many food chains are in the web?
  2. Which organisms act as producers?
  3. Which organisms act as first level consumers?
  4. Which organisms act as second level consumers?
  5. Which organisms act as third level consumers?
  6. Why is increase of population one of the causes of environmental destruction?
  7. Write the effect of  :
    1. Acid rain
    2. Global warming
  8. Write 3 examples of exsitu preservations!
  9. What is the right method to prevent the water pollution?
  10. Explain the meaning of bioremediation! Give 2 examples!
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