BIO 1500 Levels of biological organization

Molecular Level

(= involving structure or behavior of molecules) The high oxygen levels during the Carboniferous allowed for more efficient diffusion of oxygen into cells, supporting larger body sizes.

Cellular Level

(= structures and processes performed by cells) Enhanced cellular respiration due to increased oxygen availability provided more energy for growth and maintenance of larger body structures.

Organismal Level

(= physiol. of plants, animals, fungi... - how do they work?) Larger dragonflies had improved flight capabilities and could cover greater distances, aiding in hunting and avoiding predators.

Ecological Level

(= interactions between species/organisms and environment) The high oxygen levels and abundant plant life created a rich ecosystem with ample food resources, supporting larger insect populations.

Evolutionary Level

(= topics related to change over time) Natural selection favored larger body sizes in dragonflies due to the advantages in predation and survival in the oxygen-rich environment.