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The presence of termites and earthworms in soil does not promote…

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The presence of termites and earthworms in soil does not promote

A. porosity and fertility

B. porosity and aeration

C. aeration and fertility

D. acidity and aeration




The activities of termites and earthworms in soil influence to a degree its properties such as porosity, aeration and fertility.

Now for the right answer to the above question:

  1. Earthworms and termites often burrow into the soil, causing a level of porosity. Earthworm’s secretions and excrements are nitrogenous compounds which could improve soil fertility. Termites too are decomposers which help recycle nutrients in soil. so, A is incorrect.
  2. Aeration and porosity are close in meaning; termites and earthworms promote both. B is also incorrect.
  3. Option C and A are essentially the same. So, C is also incorrect.
  4. D is correct; termites and earthworms do not promote the acidity of soils.


You may please note that:

  • Porosity and aeration are almost the same; while porosity has to do with space between the soil particles, aeration has to do with the air occupying this space.
  • Termites and earthworms are not known to secret acids into the soil.

Use the questions and answers session to raise more questions and deal further on this topic…

/ culled from 2017 JAMB-UTME biology question 22 /

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