3 Theories of Multicellularity

Question 1

Colonial Theory 1

Answer 1

unicellular -> colony -> specialization (leads to locomotion) -> food synthesis

-> specialization again (leads to reproduction) -> locomotion ->

ends in radial symmetry

Question 2

Colonial theory 1 specializations

Answer 2

Locomotion and Reproduction

Question 3

Colonial theory 1 results in

Answer 3

Radial Symmetry

Question 4

Colonial Theory 2

Answer 4

colony -> solid colony -> hollow colony ->
-> specialization (reproduction; get folded inside) -> other inside cells specialize for digestion

-> locomotion + food synthesis ->

ends in radial symmetry

Question 5

Hollow colony advantage

Answer 5

Equal access to light and nutrients

Question 6

Colonial theory 2 specializations

Answer 6

Cells that are folded inside

Reproduction and Digestion

Question 7

Syncitial Theory

Answer 7

Large unicellular protist -> areas within body become specialized -> developed internal membranes to separate areas -> more specialization (more cells) ->

ends in bilateral symmetry