Lab report questions A Describe the importance of an intromittent organ (penis)
ID: 134763 • Letter: L
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Lab report questions A Describe the importance of an intromittent organ (penis) in males for terrestrial reproduction.? B Compare and contrast the female reproductive system of amphibians and monotremes. In what ways are reptiles intermediate? C What is the difference between a cloaca and a vulva? Why would a vulva be preferable for live birth? A Why would a cervix be adaptive when retaining an embryo in the mother's body? B Discuss the environmental pressures that may have resulted in the transition from laying eggs, to nurturing embryos/fetuses within the body. 7. 8.Explanation / Answer
(intromittent organ) is present in both vertebrates and nonvertebrates
It is the organ by which insemination occurs insexually receptive mates (females and hermaphrodites)
Intermittent organ in the different species are not necessarily homologous. For example, in mammal is at most analogous to the intermittent organ of a male insect
In mammals e. g. Human the intermittent organ bears the distal part of the urethra, which discharges both urine during urination and semen during copulation
But in many species it has only single function of intromission
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