Answer:
Symptomatology and transmission
The clinical manifestations of acute HBV infection are age dependent. Infants, young children (younger than 10 years of age), and immunosuppressed adults with newly acquired HBV infection are usually asymptomatic. [2] Older children and adults are symptomatic in 30%–50% of infections
"Auxins stimulates the elongation of cells in the plant cell and triggers phototropism (the growth of plants towards light)."
Fungi, animals and plants are eukaryotic.