Answer:
The correct answer would be nephrons; Malpighian tubules.
The nephron is the functional unit of kidneys in human beings. Each kidney consists of 1.5-2 millions of nephrons. The nephron consists of a renal corpuscle and renal tubule.
It helps in the formation of urine by filtration, secretion, reabsorption, and excretion of various substances.
The malpighian tubule is a part of a system associated with functions like excretion and osmoregulation. It is mainly found in myriapods, insects, tardigrades, and arachnids.
It helps in absorbing water, solutes, and wastes from the surrounding hemolymph.