Question

multiple - choice 1.5 points
what is the structure which some protists use to survive when water availability becomes low or when ph or temperature changes make normal cellular function impossible. this structure allows them to come \back to life\ when more water is available or when more favorable conditions return.
cysts
water molds
teeth
endospores

Explanation:

Some prokaryotes form endospores when environmental conditions are harsh like low water availability, extreme pH or temperature. Endospores are highly resistant structures that allow them to survive and then 'come back to life' when conditions improve. Cysts are also dormant structures but are different from endospores in formation and characteristics. Water molds are a different type of organism and tests are protective coverings in some organisms not related to this survival - under - stress mechanism.

Answer:

D. endospores