How to rotate multiple objects towards one point? Hello fellow blenderers,

I would like to ask if there is a way to rotate multiple objects towards one point. In my case of sunflower, it is the central point of the flower head. (See the picture below). 



If you observe the image below, the central seeds are rotated more towards the centre which I would like to achieve by some multiple object rotation towards one point, however I can't figure how or if it is possible at all.



I was struggling to model the distribution of sunflower seeds, finally made som progress, but this attitude might be wrong in general (I ran the script from Brecht here - Organic yet accurate modeling with the golden spiral , added particles, with hair settings, with smaller particles in central part, then convert the particles to objects and deformed them to semispherical shape with latice deformer) If you can share your idea, I wouldn't mind :) 

Thx a lot
Perhaps DupliVerts are too inflexible for what you need, but their ability to orient objects according to the parent object's vertex normals certainly makes it easy to have duplicates point toward the center, as illustrated here:
 

To make the above, simply parent the master cone (in center) to the spiral, then go to the spiral's Properties->Object tab, where you will find a Duplication category (in red box above). Select Verts, then check Rotation (in green box above). Then simply rotate the master cone to re-orient all the other cones however you want. Be aware that whether-or-not the master cone has its rotation applied (Ctrl-a) makes a difference; try both ways to see which suits in this instance.

Also know that for finer detail and ability to scale seeds differently, you could do a Make Duplicates Real for all the DupliVerts, then give each a Track To constraint oriented toward an empty at the center.

By the way, the curve was created via Add Curve->Extra Objects, then converted to mesh for this use. You might need to turn Extra Objects on in User Prefs.