Evolution and Classification

What is a dichotomous key?

• A tool used for identifying organisms based on a series of choices that lead to the correct name.

• A method for classifying organisms based on their physical characteristics.

• A type of key used in cryptography to secure information.

• A software application for managing biological data.

What is classification in biology?

• A process of organizing living organisms into groups based on shared characteristics and evolutionary relationships.

• A method of identifying new species based on genetic analysis.

• A technique for measuring the size and weight of organisms.

• A way to determine the age of fossils through radiometric dating.

What are homologous structures?

• Body parts in different species that have similar structures and serve the same function.

• Body parts in different species that have similar structures but may serve different functions, indicating a common ancestor.

• Body parts in the same species that have different structures and serve different functions.

• Body parts in different species that have different structures but serve the same function.

What is the difference between autotrophs and heterotrophs?

• Autotrophs consume other organisms for energy, while heterotrophs produce their own food.

• Autotrophs produce their own food (e.g., plants), while heterotrophs consume other organisms for energy (e.g., animals).

• Autotrophs and heterotrophs are both types of plants.

• Heterotrophs can produce their own food, while autotrophs cannot.

What is the role of the environment in evolution?

• The environment has no impact on evolution.

• The environment influences which traits are favorable for survival, thus affecting the process of natural selection.

• The environment only affects the physical characteristics of organisms.

• The environment determines the lifespan of organisms.

What are prokaryotic and eukaryotic cells?

• Prokaryotic cells are complex organisms with a nucleus, while eukaryotic cells are simple and lack a nucleus.

• Prokaryotic cells are simple, single-celled organisms without a nucleus, while eukaryotic cells are complex and contain a nucleus.

• Prokaryotic cells are found only in plants, while eukaryotic cells are found in animals.

• Prokaryotic cells are larger than eukaryotic cells and have multiple nuclei.

What is the difference between convergent and divergent evolution?

• Convergent evolution occurs when unrelated species develop similar traits, while divergent evolution occurs when related species become more different over time.

• Convergent evolution occurs when related species develop similar traits, while divergent evolution occurs when unrelated species become more different over time.

• Convergent evolution is the process where species become extinct, while divergent evolution is the process of species adapting to their environment.

• Convergent evolution occurs when species evolve in isolation, while divergent evolution occurs when species share a common habitat.

What evidence supports the theory of evolution?

• Similarities in DNA, fossil records, and anatomical structures among different species support the theory of evolution.

• The existence of a single species in isolation for millions of years.

• The belief that species do not change over time.

• The idea that all species were created simultaneously.

What is the importance of genetic variation in a population?

• It allows for increased competition among individuals.

• It is crucial for a population's ability to adapt to changing environments and survive.

• It leads to a decrease in population size.

• It has no significant impact on the population's survival.

What is adaptive radiation?

• A process where species become extinct due to environmental changes.

• A method of genetic engineering to create new species.

• The process by which a single ancestor species rapidly diversifies into a wide variety of forms to adapt to different environments.

• A technique used in agriculture to improve crop yields.