One who looks after the garden is called
A person whose hobby or job is growing flowers in a garden is called a gardener.
One who ploughs the field is called
A plough or plow is a farm tool for loosening or turning the soil before sowing seed or planting. Ploughs were traditionally drawn by oxen and horses, but in modern farms are drawn by tractors.
One who treats the patient is called
A physician or medical doctor is a person who uses medicine to treat illness and injuries to improve a patient's health.
One who teaches the students in a school is called
A teacher helps us to learn in the school and helps us in growing our knowledge.
One who drives the motor vehicle is called
A person who drives car is called DRIVER.
A person who drives bus is called DRIVER.
A person who drives aeroplane is called PILOT