AP and TS EAMCET Medical Model Paper 7

Choose the correct statements about cockroach
I) Ligula occurs at the distal end of the prementum of labium, whereas lingua bears the opening of the efferent salivary duct
II) Pulvillus helps in locomotion on rough surfaces whereas plantulae are useful on smooth surfaces
III) Anal cerci are the jointed structures found in both the sexes, whereas anal styles are the unjointed structures found only in males
IV) Inner layer of spermatophore is secreted by utriculi majores, whereas outer layer is secreted by phallic organs