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JAMB Biology 1999 Question 18

Question 18

Animal Nutrition

The modes of nutrition in Nitrobacter, Ascaris and Homo sapiens respectively are

  1. A.photosynthetic, parasitic and holozoic
  2. B.chemosynthetic, parasitic and holozoic
  3. C.photosynthetic, parasitic and heterophytic
  4. D.chemosynthetic, holophytic and holozoic.
Show the answer and explanation

Answer: B (chemosynthetic, parasitic and holozoic)

Explanation

Nitrobacter gets energy by oxidising nitrites (chemosynthesis), Ascaris lives in the gut of its host (parasitic) and humans ingest solid food (holozoic).