Answer:
The correct answer will be option- C.
Explanation:
The endo-symbiotic theory was given by Lynn Margilus in 1967 which explained the origin of complex eukaryote from simple prokaryotes.
The endosymbiotic theory stated that a eukaryote became complex after the ingestion of prokaryotic cells which became permanent which proved useful to each other.
The presence of mitochondria is evidence supporting the endosymbiosis which is thought to have evolved from a prokaryotic chemosynthetic bacteria in past.
Thus, option- C is the correct answer.
Ans. 'Reproduction.'
Skin cells are somatic cells or normal body cells that show mitotic cell division. These cells die and are lost daily, even without any damage or injury. Our body makes continuously new skin cells to replace died skin cells. Thus, the purpose of cell cycle for skin cells to replenish lost cells is reproduction.
Thus, the correct answer is option). reproduction.
