The seminiferous tubules
a. are the site of spermatogenesis
b. produce most of the seminal fluid.
c. empty directly into the vas deferens
d. are located within the cavernous body.
e. receive fluid from the bulbourethral glands.

The correct answer is option A. are the site of spermatogenesis.

Explanation:

The seminiferous tubules are present within the testes in males and the site of production, development, maturation of the sperm or spermatogenesis. In this reproductive organ, meiosis takes place to make sperm or male gametes.

The spermatogenesis is a three-stage process of producing mature spermatozoa from the stem cells or germ cells. The first phase is spermcytogenesis in which germ cell go under mitotic division followed by the second phase which is meiosis of the cell of the first phase and in the last phase is spermiogenesis.

Thus, the correct answer is option A. are the site of spermatogenesis.

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light-years

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b tumor cells have a cell wall instead of a membrane

explanation:

tumor cells different from normal cells because tumor cells have a cell wall instead of a membrane.