Defeat the dark eco plant was a mission in The Precursor Legacy that Jak and Daxter completed to obtain a power cell. After entering the Forbidden Temple in Forbidden Jungle, Jak encountered a dark eco plant and killed it.
The PlayStation 3 and Vita versions of this mission are related to a trophy named "Black Thumb". Completing this mission will reward you with a silver trophy.
After activating the vent switch in the mission "Find the blue vent switch", use the newly opened blue eco vents to press onward into the Temple. Open the first locked door, to find another new vent and another door. Enter it to continue. Be careful of the next platform, as it will flip around at specific intervals. Jump onto it right after the flat orange side comes up and immediately continue to safe ground.
The aphid lurker will be invincible at first due to its extracted thorns. If you stay outside the circle on the floor, their thorns will eventually retract, leaving them vulnerable to attack. Be careful of entering the circle when they are not dead yet—the plant will lunge and bite you.
Once the bug is dead, the plant will open two leaves acting as stair platforms which you will have to jump on. Once on the higher platform, use a spin kick () to damage the plant. Repeat this twice as each additional interval releases an additional bug. After the third phase, the plant will die along with the rest of its interconnected networks of hazardous vines.
- After the plant is dead, jump on top of its head to have it release a few Precursor orbs.