Practice question

Mating embrace in frogs termed amplexus Latin meaning embrace designates stereotyped dorsoventral clasp where male mounts female dorsally gripping tightly with forelimbs aided by keratinized dark nuptial pads on thumbs responsive to androgens increased seasonally. Axillary amplexus holds behind forelimbs in most ranid and bufonid frogs, inguinal around waist in primitive archaeobatrachian families. Clasp aligns cloacae closely synchronizing gamete release for external fertilization, male induces oviposition via tactile stimulation and hormonal cues, embrace may persist hours to days during breeding aggregation in temporary puddles.