Adaptations 1.Camoflauge: ability to blend 2. Mimicry: ability to resemble another
Resistance • The process of natural selection that allows certain organisms to survive against antibiotics which leads to evolution of the species. • Ex - MRSA
Patterns of Evolution • 1. Adaptive Radiation • 2. Coevolution • 3. Convergent Evolution • 4. Rate of Speciation
Adaptive Radiationaka Divergent Evolution • Occurs in a relatively short time when one species gives rise to MANY species due to creation of new habitat or another ecological opportunity
Coevolution • When species evolve in close relationship with other species. • Mutualism – both benefit • Parasitic – one species benefits, other hurt
Convergent Evolution • Unrelated species that evolve similar traits even though they live in different parts of the world.
Rate of Speciation:amount of time it takes for a species to change! • Gradualism : Theory that evolution proceeds in small gradual steps 2. Punctuated Equilibrium: Theory to explain abrupt or sudden changes in fossil record.
Tropism: A plant’s growth response to an external stimulus • 1. Phototropism: • 2. Gravitropism: • 3. Thigmotropism
1. Phototropism • Response to LIGHT • Plants will grow in the direction of the light source
2. Gravitropism • Response to GRAVITY • Positive or Negative growth • Positive – Plant growth down towards gravity (roots) • Negative – Plant growth upward (stem/leaves)
3. Thigmotropism • Plant’s growth response to mechanical stimuli – like contact… • Growth towards the point of contact – (ex. vines)
Behaviors and Natural Selection • 1. Hibernation • 2. Estivation • 3. Migration
Hibernation • Dormancy due to cold weather
Estivation • Dormancy due to hot weather
Migration • Relocate to other area due to weather conditions