Number of chambers in the heart of cockroach is (1) 5 (2) 9 (3) 13 (4) 16

Answer: (3)

Cockroaches are pests inhabiting the unhygienic and damp places. They are dark brown in colour belonging to the phylum Arthropoda, the Blattidae family, and class Insecta. A cockroach has a tubular heart which is 13 chambered. Oxygenated blood reaches each chamber through a pair of slits openings known as Ostia.

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