1. Orientation
1.1. Plant
1.1.1. Directional
1.1.1.1. Tropism
1.1.1.1.1. Mechanism
1.1.1.1.2. Positive/Negative
1.1.2. Non-Directional
1.1.2.1. Nastic
1.1.2.1.1. Mechanism
1.2. Animal
1.2.1. Directional
1.2.1.1. Taxis
1.2.1.1.1. Positive/Negative
1.2.2. Non-Directional
1.2.2.1. Kinesis
1.2.3. Complex
1.2.3.1. Homing
1.2.3.1.1. Navigation
1.2.3.2. Migration
1.2.3.2.1. Navigation
2. Timing
2.1. Animal
2.1.1. Endogenous
2.1.1.1. Clock
2.1.1.1.1. Rhythms
2.1.1.1.2. Pattern
2.1.1.1.3. Navigation
2.1.1.1.4. Migration
2.1.2. Exogenous
2.2. Plant
2.2.1. Phototropism
2.2.1.1. Phytochrome
3. Interelationships
3.1. Types
3.1.1. Competition
3.1.2. Exploitation
3.1.3. Mutualism
3.1.4. Commensalism
3.2. Plants
3.2.1. Competition
3.2.1.1. Alleopathy
3.2.1.2. Stratification
3.2.1.3. Succession
3.2.2. Exploitation
3.2.2.1. Herbivory
3.2.2.2. Paratism
3.3. Animals
3.3.1. Exploitation
3.3.1.1. Predator-Prey
3.3.1.2. Herbivory
3.3.2. Competition (Infraspecific)
3.3.2.1. Agression (up)
3.3.2.1.1. Hierarchies
3.3.2.1.2. Territory