Question on: JAMB Biology - 1999
The modes of nutrition in Nitrobacter, Ascaris and Homo sapiens respectively are
A
photosynthetic , parasitic and holozoic
B
chemosynthetic, parasitic and holozoic
C
photosynthetic, parasitic and heterophytic
D
chemosynthetic, holophytic and holozoic
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Correct Option: B
Here's the breakdown of the modes of nutrition for each organism:
* **Nitrobacter:** This is a bacterium that obtains energy through chemosynthesis. It oxidizes inorganic substances (like ammonia) to create energy.
* **Ascaris:** This is a parasitic roundworm. It obtains nutrients by living within a host and absorbing digested food.
* **Homo sapiens:** Humans are holozoic, meaning they ingest complex organic food and break it down through digestion.
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