Panch

Tridoshas

http://totreat.blogspot.com/2012/07/dosha-what-quiz-ailments-diet.html

Organ

Dense Element	Subtle Element	Sense Organ	Motor Organ	Function
Space	Sound	Ears	Vocal Chords	Speaking
Air	Touch	Skin	Hands	Grasping
Fire	Sight	Eyes	Feet	Moving
Water	Taste	Tongue	Genitals	Procreating
Earth	Smell	Nose	Anus	Excreting

Planets

1. Agni tattva (fiery element) is ruled by Mars. Sun also has the same nature.
2. Bhoo tattva (earthy element) is ruled by Mercury.
3. Vaayu tattva (airy element) is ruled by Saturn.
4. Aakaasa tattva (ethery element) is ruled by Jupiter.
5. Jala tattva (watery element) is ruled by Venus. Moon also has the same nature.

http://ponnadi.blogspot.com/search/label/tattva 

These rulerships throw light on the basic nature of planets. 

1. Being a fiery planet, Mars governs leadership, enterprise etc. 
2. Being an earthy planet, Mercury governs memory, logical abilities etc. 
3. Being an airy planet, Saturn governs wandering and free spirit. 
4. Being a watery planet, Venus governs imaginative and creative work. 
5. Being an ethery planet, Jupiter governs wisdom, intelligence and perceiving knowledge.