A) Malaria
B) Cholera
C) Jaundice
D) None of these
Correct Answer: C
Solution :
[c] Cockroach has blood known as haemocoel, snails and kangaroos also have blood in their bodies. But Hydra does not contain any blood but still it respires. It does not have any respiratory organs but it respires and thus exchanges gases throughout its body.
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