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

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1. Tetanus disease is caused by

Mycoplasma
Virus
Bacterium
Fungus

2. What are holes in pores in Porifera used for?

Circulation of water throughout the body
Secretion of waste from the body
Circulation of air throughout the body
For the free movement of the body

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