Final answer:
Yes, spore-forming bacteria can develop a protective structure called an endospore to survive under harsh conditions, which is true.
Step-by-step explanation:
It is true that spore-forming bacteria develop a structure known as an endospore to protect the cell under harsh conditions. Endospores are incredibly resilient and enable bacteria such as those from the genera Bacillus and Clostridium to survive extreme environments. These structures are formed around the bacterial DNA, containing a cortex and a tough protein spore coat, and they can resist heat, drought, and even chemicals. Once conditions become favorable again, the endospore can reactivate and return to a vegetative state.