6
Question
Which of the following has the scrotal sacs?
Which of the following has the scrotal sacs?
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Solution
The correct option is A Bat
The scrotum is a characteristic of mammals. In humans, like most of the other mammals, testes are situated outside the abdominal cavity within a pouch called scrotum. The scrotum helps in maintaining the low temperature of the testes (22.5-degree centigrade lower than the normal internal body temperature) necessary for spermatogenesis. In monotremes, the testes do not descend at all while in all other mammals they descend at least as far as the pelvis. Testes are located in the abdomen in some mammals such as the marsupial Notoryctes, insectivores, most edentates, whales, elephants, hyraxes, sirens, rhinos, and many seals. So, the correct answer is option B.
The scrotum is a characteristic of mammals. In humans, like most of the other mammals, testes are situated outside the abdominal cavity within a pouch called scrotum. The scrotum helps in maintaining the low temperature of the testes (22.5-degree centigrade lower than the normal internal body temperature) necessary for spermatogenesis. In monotremes, the testes do not descend at all while in all other mammals they descend at least as far as the pelvis. Testes are located in the abdomen in some mammals such as the marsupial Notoryctes, insectivores, most edentates, whales, elephants, hyraxes, sirens, rhinos, and many seals.
So, the correct answer is option B.
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