Read the given paragraph It is lined by glandular and ciliated cells. It absorbs nitrogenous
Channel: Doubtnut
Date: 2020-08-23

Read the given paragraph It is lined by glandular and ciliated cells. It absorbs nitrogenous waste products from haemocoel and covert them into uric acid which is excreted out through the hindout Which of the following structures of cockroach is referred here ?