Elementary text-book of zoology (1884) Elementary text-book of zoology elementarytextbo0101clau Year: 1884 FUNCTIONS OF MALE AND FEMALE. 103 the passive agent in copulation, merely receiving the semen of the male; the female possesses material from which the offspring p—I Pis. Male of Aphis platanoides. oc, ocelli ; Hr, honey tubes ; P, copulatory organ. develop, and accordingly takes care of the development of the fertilised egg and of the later fate of the offspring. Hence the female usually possesses a less active body and numerous arrangements for the protection and nourishment o
Elementary text-book of zoology (1884) Elementary text-book of zoology elementarytextbo0101clau Year: 1884 FUNCTIONS OF MALE AND FEMALE. 103 the passive agent in copulation, merely receiving the semen of the male; the female possesses material from which the offspring p—I Pis. Male of Aphis platanoides. oc, ocelli ; Hr, honey tubes ; P, copulatory organ. develop, and accordingly takes care of the development of the fertilised egg and of the later fate of the offspring. Hence the female usually possesses a less active body and numerous arrangements for the protection and nourishment of her offspring, which develop either from eggs laid by the mother and sometimes carried about with her, or in the maternal body and are born alive. The function of the male is to seek, to excite, and to hold the female during copulation ; hence, as a rule, he possesses greater vigour and power of movement, higher development of the senses, various means of exciting sexual
Size: 1789px × 1118px
Photo credit: © Bookworm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: archive, book, drawing, historical, history, illustration, image, page, picture, print, reference, vintage
