In what space does MoveIT plan paths?

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I have two questions about how does MoveIT plan paths:

1. If my target is defined in a task space, does MoveIT convert the target into c-space by solving IK and then plans in configuration space or does it look for a plan in task space and then converts trajectory into c-space?

2. If my target is defined as joint values does in convert it to corresponding task space pose using forward kinematics and looks for a path in a task space?

I am worried about it because if planning is always performed in task space then collision detection requires to solve IK on each planning iteration which can work quite slow when IK is solved using Jacobian based solvers.