Answer:
The correct answer is option - d. Production of primary spermatocytes.
Explanation:
The accessory cells or supporting cells present within the seminiferous tubules of reproductive system termed as the Sertoli cells. They play various roles in the body and reproductive system.
Sertoli cells make blood-testis barrier in adjacent Sertoli cells in the seminiferous tubules. These cells secrete different types of enzymes and hormones such as inhibin which are also secreted by ovary and placenta in females. Sertoli cells produce seminiferous tubular fluid to provide nutrition to the sperm. Apoptotic germ cells are timely eliminated by these cells.
Thus, the correct answer is option D. Production of primary spermatocytes.
Answer:
D
Explanation:
because vaidity group dont sound right
Answer:
C) A, B, and C
Explanation:
The amount of Earth's surface water that is not located in the oceans is the addition of A, B, and C in the pie chart.
About 71% of the Earth's surface is covered by water. The ocean has been reported to hold about 97% of all the water on earth while water present in air, rivers, lakes, glaciers and biological systems constitute the remaining percentage.
<em>From the chart, D can be said to represent the amount of earth's surface water held by oceans while the rest (A, B, and C) can be said to be the amount of Earth's surface water that is not located in the oceans.</em>
The correct option is C.
it allows them to hold water bc if it is solid
