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BIOLOGY

JAMB 2013 - Question 3

Biology 2013 JAMB Past Questions - Question 3: The organ which is sensitive to light in Eugiena is the

Choose the most appropriate option for the gap .

The organ which is sensitive to light in Eugiena is the

A: flagellum.

B: chforoplast.

C: eyespot.

D: gullet

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Correct Answer

Explanation

Eyespot detects presence and intensity of light so that Euglena can either swim towards light- if the intensity is low or away from it if the intensity is high. Chloroplast is an organelle which contains chlorophyll for absorbing light energy from the sun for the synthesis of carbohydrate. Gullet is athrough which water containing ting organisms (diatoms) enter the body of Euglena. It is used for holozoic feeding when light fails to shine on the body of water.