Answer;
C) parathyroid glands; parathyroid hormone
Explanation;
-Parathyroid glands (humans, four) are imbedded in the thyroid gland and they secrete the parathyroid hormone (PTH). So-called C cells dispersed throughout the thyroid gland, the parathyroids and thymus secrete another hormone, calcitonin. Both hormones play a significant role in the maintenance of calcium homeostasis.
-PTH, a polypeptide secreted in response to hypocalcemia raises the concentration of plasma calcium by; increasing renal calcium reabsorption, mobilizing calcium from bones by stimulating osteoclastic activity, in the presence of adequate amounts of vitamin D, stimulating the absorption of calcium from the small intestine; and lowering levels of plasma inorganic phosphate by inhibiting renal reabsorption of phosphate
This is an example of analogous structures, they've evolved it independently. Even though they have similarities, still the evolution and purpose of the hair loss is different and independent, also they do not share a common ancestor, which makes it an example of an analogous structures. Another good example of this structures are the wings of the birds and the insects, they do not share a common ancestor, but they have both developed wings for flying.
<span>D.both male and female reproductive parts.</span>
Petiolated is the correct term