What is the characteristic feature of the intestine of an earthworm?

In which abdominal segment are the anal cerci present in cockroach?

Which of these methods are utilized by frogs for protection?

Which of these is a cellular aggregation in frog?

Which of these structures attach the testes to the kidneys in male frogs?

Which of the following is the main circulating fluid of the body?

Which of these is true about antennae of cockroaches?

The buccal cavity of the earthworm leads to the _____