The color of the hemolymph found in a cockroach is .....

The blood of a cockroach does not contain hemoglobin. This is because........

In a cockroach, the open circulatory system does not pose a physiological barrier because ...

The heart of a cockroach is physiologically .....

Which of the following statement$(s)$ is/are correct regarding the excretory system of a cockroach?
$(i)$ Excretion is performed by Malpighian tubules.
$(ii)$ They absorb nitrogenous waste products and convert them into uric acid,which is excreted out through the hindgut.
$(iii)$ In addition,fat body,nephrocytes,and urecose glands also help in excretion.

Which of the following statements is false regarding the heart of a cockroach?