In unfavorable conditions, which state do zooplankton species in lakes and ponds enter?
Diapause
Aestivation
Hibernation
Speciation
When environmental circumstances are adverse, zooplankton species in lakes and ponds experience diapause. Diapause is a stage of development that is paused. It is similar to hibernation in higher species, except that it is utilized in tropical settings to avoid hot, dry summers.
Diapause is a state of halted development that occurs in animal species such as insects and zooplanktons in response to adverse situations.
This technique holds an animal's development at a specific developmental stage (embryo, larvae, etc.) until unfavorable conditions pass. The organism's metabolic activity is lowered during this period.
Option 1 is the correct answer.