Which of the following is NOT a type of delayed effect from pesticide exposure?

Immediate allergic reactions are not considered a type of delayed effect from pesticide exposure because they occur soon after exposure. Delayed effects refer to health impacts that manifest some time after exposure has occurred, often days to years later.

Chronic effects are characterized by long-term health issues that arise after prolonged exposure to pesticides, indicating their persistence in the body and the gradual onset of symptoms. Developmental effects involve changes in an organism's development that may not be apparent until later stages of growth, highlighting how certain pesticides can impact individuals even before they are fully formed. Systemic effects refer to impacts that spread throughout the organism's system, as a result of absorption into the bloodstream, typically emerging after a period of exposure.

In summary, immediate allergic reactions are immediate responses and do not fit the classification of delayed effects, which are defined by their onset time following exposure.