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Jain a Bio,ogy
on them. The newly hatched birds are quit: helpess and require parental attention for several weeks. 936
"In contrast to these eggs which develop more or less at the mercy of the environment, the mammalion egg....develops within the uterus of the female, where it is safe from predators and from enviromental changes until it is able to cope with them.'37
In the evolution of the Vertebrates from fish to man,38 the trend has been toward the production of fewer eggs, and the development of instincts for parental care of the young.39 It is indicative that the fish40 produces" eggs a vear, which develop into adult fish, while mammals 41 have few offspring,” but take such good care of them that the majority reach adulthood,"42
In the Vertebrates a number of accessory structures43 have developed to facilitate the transfer of sperm from the male to the female reproductive tract44 and to provide a place for the development of the fertilized egg.45 "These structures have evolved either from or with the urinary system, and the two systems together are frequently referred to as the urogenital system'?46 in modern Biology.
36. Biology, p. 421. 37. Tattvärthadhigama Sūtra II :4. The following classes of animals-Andaja-oviparous
(pisces. Reptilia, Batrachia ). Jarāyuja (mammals born with placenta, including all mammals other than the potaja ) and potaja ( a class of placental mammals comprising the Dec duata with the exception of Man, the Apes and the carnivora) indicate that the evolution of more efficient methods for bringing about fertilization has been accommpanied by the evolution of instincts for the care of the
young. 38. Biology, p. 421. 39. Biology; p. 421. 40. Pannavana I. 63-92. 40/a Sūtrak’tanga II. 3 (See Ahāramkṣepa for the bringning up of mammalion
youog kiddies) 41. Sūtrakrtanga II. 3.22. Andajānām ...matsya, etc.", TS. II. 34. 4. "Jarāyujāpār manusya -go - mahisajāvikasca upto marjārādinām. "Potajānam
sallaka - hasti..garbhe janma /", TS. II. 34. 43. Biology, p. 421. 44. "Itthie nabhihitiha sirādugam pupphanaliyāgāram/ tassa ya hitha yoni
ahamuha samthiya kosā // 9 // Tassa ya hittha cuyassa mamjari (jārisi ) taris ā
u mansassa / Tandula Veyaliya. p. 3. 45. "Te riukāle phudiya soniyalavaya vimoyami o kosayāram jonim Sãmpatta -
sukkamisiya jaiya / taiya jivuvavah jugga //", Ibid. 46. Biology, p. 421.
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