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1. |
ive reasons for the following: (a) The human testes are located outside the abdominal cavity. (b) Some organisms like honey-bees are called parthenogenetic animals. |
Answer» (a) The human testes are located outside the abdominal cavity. A pair of testes i: situated outside the abdominal cavity in a sac of skin called the scrotum. Scrotum keeps the testes at a temperature 2-2.5°C lower than the internal body temperature, which is necessary for the synthesis of sperms. (b) The phenomenon of development of female gamete directly into an individual without fertilisation is called Parthenogenesis e.g. rotifers, honey bees, lizards and birds. |
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