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BIOLOGY

JAMB 2006 - Question 40

Biology 2006 JAMB Past Questions - Question 40: An organism which exhibits extracellular digestion is

Choose the most appropriate option for the gap .

An organism which exhibits extracellular digestion is

A: Spirogyra

B: Paramecium

C: Amoeba

D: Rhizopus

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Correct Answer

Explanation

D - Extra-cellular digestion is the breakingdown of food outeide the body of an organism. Rhizopus is a saprophytic funguswith rhizoids which secrete enzymes on the substrate (food) and absorbs thedigested food. Amoeba and Paramecium feed on smaller microscopic organisms byengulfing them using the pseudopodia and beating of the cilia respectively.Spirogyra is autotrophic.