Which of the following tissue sections has been represented in the given diagram?

Which of the following statements is true about prostomium?

Which of these statements is true about nerve ring?

Which of the following is not a type of simple epithelial tissue?

During aestivation in frogs, gaseous exchange takes place through __

In the brain of frogs, optic lobes are present in the ___

Which of these is not a function of the sensory system of earthworms?

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