Major Groups of Organism L2

• FACT or BLUFF: One important aspect of the geologic time scale is the classification of major groups of organisms that have existed throughout Earth's history.

  FACT
• FACT or BLUFF: Prokaryotes are single-celled organisms that lack a nucleus and other membrane-bound organelles.

  FACT
• FACT or BLUFF: Protists are a diverse group of prokaryotic microorganisms that do not fit into any other kingdom.

  BLUFF
• FACT or BLUFF: Plants play a crucial role in ecosystems by providing food, carbon dioxide, and habitat for other organisms.

  BLUFF
• FACT or BLUFF: Invertebrates had a hard exoskeleton and are considered important index fossils for dating rocks

  FACT
• FACT or BLUFF: Vertebrates include fish, amphibians, reptiles, birds, and mammals.

  FACT
• Single-celled, lack a nucleus and other membrane-bound organelles.

  Prokaryotes
• Multicellular eukaryotic organisms, have the ability to photosynthesize

  Plants
• Animals that have a backbone or spinal column

  Vertebrates
• Diverse group of eukaryotes, do not fit into any other kingdom

  Protists
• Animals that do not have a backbone

  Invertebrates
• Invertebrates appeared around 600 million years ago
• Ferns are a group of plants that reproduce via spores and have vascular tissues for transporting water and nutrients
• Diatoms are a type of protist that have a unique cell wall made of silica
• Protists appeared around 2 billion years ago and played a significant role in the evolution of more complex organisms
• Protists can be single-celled or multicellular and have a variety of different structures and functions.
• Cyanobacteria also known as blue-green algae, were one of the first prokaryotes to perform photosynthesis, releasing oxygen into the atmosphere and contributing to the development of an oxygen-rich environment.
• Prokaryotes appeared around 3.5 billion years ago and have played a crucial role in shaping Earth's environment.
• Prokaryotes are the earliest known forms of life on Earth.
• They had a hard exoskeleton and are considered important index fossils for dating rocks.

  Invertebrates
• They include fish, amphibians, reptiles, birds, and mammals.

  Vertebrates
• Dinosaurs were a diverse group of reptiles that dominated the terrestrial ecosystems during the Mesozoic era