A. Protista:Objective evidence of their existence dates back to 1.5 billion years ago in the fossil record. Bacteria, the first group of organisms to have evolved on Earth, are not included in the list of options.
That's correct! The theory of evolution states that organisms have evolved over time from common ancestors through the process of natural selection. This gradual change in species over generations is driven by factors such as genetic variation and environmental pressures.
Sexual reproduction evolved before the evolution of multicellularity. Organisms were able to reproduce sexually as single-celled organisms before multicellular life forms emerged.
Colonial organisms likely evolved into multicellular organisms through a process known as cellular differentiation, where specialized cells with specific functions developed within the colony. This evolutionary transition allowed for increased complexity and efficiency in tasks such as reproduction, growth, and survival.
Organisms first evolved in the kingdom Bacteria. Bacteria are single-celled organisms that lack a nucleus and other organelles. They are considered the earliest and most primitive form of life on Earth.
The first eukaryotic organisms on earth were likely single-celled organisms such as protists, which are a diverse group of organisms that have a nucleus and other membrane-bound organelles. These organisms are thought to have evolved around 1.6-2.1 billion years ago.
Darwin's theory of common descent states that all organisms evolved from past organisms.
Complex organisms evolved from simple organisms, so simple organisms evolved first.
Unicellular organisms evolved first; and from them evolved the multicellular organisms. But that leads onto another question as to why multicellular organisms evolved.
That's correct! The theory of evolution states that organisms have evolved over time from common ancestors through the process of natural selection. This gradual change in species over generations is driven by factors such as genetic variation and environmental pressures.
Organisms evolved 550 Ma to form shells. when the Conditions were right for formation of shells.
No, that isn't a statement made about evolution. The theory of evolution concerns how organisms have changed over periods of time. Everything has to have come from something! However, all living organisms alive today have evolved from predecessors, or have not really evolved much at all, e.g. Gingko bilboa and several species of sea animals.
animals, plants, and fungi
Because they evolved them from when they were single celled organisms
Dolphins.
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branching diagram
Lamark