Final answer:
Innate immune defenses act immediately upon exposure to pathogens, whereas adaptive immune defenses take 7 to 10 days to develop after initial exposure to a new pathogen, hence the statement is false.
Step-by-step explanation:
The statement that innate immune defenses typically take between 7 to 10 days to fully develop is false. Innate immunity is the first line of defense in the immune system, acting almost immediately upon exposure to pathogens. In contrast, it is the adaptive immune defenses that develop over a period of time, such as 7 to 10 days, after initial exposure to a new pathogen. The innate immune response includes barrier defenses, phagocytic cells, and various molecular mechanisms that work continuously or are rapidly mobilized upon infection. The adaptive immune response, on the other hand, includes highly specific antibody production and cell-mediated responses that develop after the innate response and form immunological memory.