How many ommatidia are present in the compound eyes of the cockroach?

Where does the urinogenital duct open in the case of frogs?

What type of respiration is shown by frogs in water?

Which of the following labelled structures are responsible for the formation of the genital pouch?

How many chitinous teeth are present in the gizzard of cockroaches?

Which of the following statements is true about setae present in earthworm?

Which of these is not a division of hindgut in cockroach?

In frogs, the undigested food passes out through the __