evolution of cell multicellularity Flashcards
What is the main characteristic of multicellular organisms?
They are made up of multiple cells, which work together to perform different functions.
How has multicellularity evolved in different organisms?
It has evolved independently more than once in the origins of plants, animals, fungi, and eukaryotic algae.
Why do most cells in multicellular organisms lose their ability to live independently?
They specialize in specific functions, so they can no longer survive or divide on their own.
What are the advantages of multicellularity?
- Longer life span: Death of one cell doesn’t harm the organism.
- Larger size: Organisms can occupy niches that unicellular organisms can’t.
- Complexity: Allows for differentiation of cell types, leading to specialized functions.
Are unicellular organisms still more common than multicellular ones?
Yes, most organisms on Earth are unicellular, and most of the biomass consists of unicellular organisms.
Why might unicellularity have advantages in some situations?
Despite the benefits of multicellularity, unicellular organisms can be more efficient or adaptable in certain environments, giving them a relative advantage.
