Multiple choice questions XXIX — task. Science CBSE, Class 9.

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1. Identify the excretory organs present in flatworms.

Nephridia
Protonephridia
Renette glands
Malpighian tubule

2. The stinging cells found in cnidaria are known as _____________.

Flame cells
Haemocoel
Coelenteron
Cnidoblasts

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