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Phylum Porifera

The presence ...

Question

The presence of cilia, an oral groove and food vacuoles, and the absence of chloroplasts in a unicellular organism indicate that organism carries on

A

Sexual reproduction

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B

autotrophic nutrition

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C

extracellular digestion

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D

heterotrophic nutrition

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Solution

The correct option is D heterotrophic nutrition
The presence of oral groove and food vacuoles indicates that the mode of nutrition is heterotrophic.
The absence of chloroplast in the organism indicates that the mode of nutrition is not autotrophic.

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