Classification and Evolution

What is the Protista kingdom?

• A diverse group of organisms that can be unicellular or multicellular, and they can be autotrophic or heterotrophic.

• A kingdom that only includes multicellular organisms.

• A group of organisms that are exclusively autotrophic.

• A classification for only prokaryotic organisms.

What are eukaryotes?

• Organisms that lack a nucleus and membrane-bound organelles.

• Organisms whose cells contain a nucleus and membrane-bound organelles.

• Single-celled organisms without a defined nucleus.

• Organisms that can only survive in extreme environments.

Give an example of a unicellular organism.

• Bacteria

• Fungi

• Mammals

• Birds

Define Invertebrate.

• An animal that does not have a backbone.

• A type of animal with a spine.

• A mammal that lives in water.

• An animal that lays eggs in water.

What is a defining feature of the Animalia kingdom?

• Multicellular organisms that are typically heterotrophic.

• Unicellular organisms that are autotrophic.

• Organisms that can photosynthesize.

• Organisms that reproduce asexually.

What is the role of decomposers in an ecosystem?

• Decomposers break down dead organic material, recycling nutrients back into the ecosystem.

• Decomposers produce energy through photosynthesis.

• Decomposers compete with producers for sunlight.

• Decomposers are primary consumers that eat plants.

What is a characteristic of multicellular organisms?

• They are composed of a single cell.

• They can only reproduce asexually.

• They are composed of more than one cell, which can specialize to perform different functions.

• They do not have specialized cells.

What are the main characteristics of the Plant Kingdom?

• Multicellular organisms that are prokaryotic and heterotrophic.

• Multicellular organisms that are eukaryotic and autotrophic.

• Unicellular organisms that are eukaryotic and autotrophic.

• Multicellular organisms that are eukaryotic and heterotrophic.

What is the significance of classification in biology?

• Classification helps organize and categorize living organisms, making it easier to study their relationships and characteristics.

• Classification is used to determine the age of fossils and ancient organisms.

• Classification allows scientists to create new species through genetic engineering.

• Classification is primarily concerned with the physical appearance of organisms.

What is the main difference between prokaryotes and eukaryotes?

• Eukaryotes have a nucleus, while prokaryotes do not.

• Prokaryotes have a nucleus, while eukaryotes do not.

• Eukaryotes are unicellular, while prokaryotes are multicellular.

• Prokaryotes are larger than eukaryotes.