Blood of Periplaneta does not carry oxygen because
${O_2}$ is transported by respiratory tubules
Its respiration is anaerobic
There is no cells in its blood
Periplaneta does not has any blood vessel
Choose the correct statement for Periplaneta americana
The terga, sterna and pleura of cockroach body are joined by
Cescribe the Respiratory cavities of cockroach.
Phallic organs in cockroach are related to
What opens in ejaculatory duct of cockroach?