The acquisition of traits necessary for complex multicellularity occurred independently in plants and animals, but took place in a specific order. In what order did these processes evolve?
A)cell adhesion molecules, a mechanism of communication, bulk flow
B)bulk flow, a mechanism of communication, cell adhesion molecules
C)a mechanism of communication, bulk flow, cell adhesion molecules
D)a mechanism of communication, cell adhesion molecules, bulk flow

Question

Quizplus · Accepted Answer

The evolution of complex multicellularity required specific traits to develop in a particular sequence. Initially, cell adhesion molecules evolved to allow cells to stick together and form multicellular structures. Following this, mechanisms of communication between cells developed, enabling the coordination of activities across the organism. Finally, bulk flow systems evolved to efficiently transport nutrients, gases, and signaling molecules over larger distances within the organism, supporting the increased size and complexity of multicellular life.

The Acquisition of Traits Necessary for Complex Multicellularity Occurred Independently