Questions and Answers
What is taxonomy?
Taxonomy is the scientific study of how organisms are classified.
Where is the genus located in an organism's scientific name?
The first word in an organism's scientific name indicates the genus.
An organism whose cells contain nuclei is called a eukaryote.
True
Which scientist organized animals into groups according to observable features?
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Which of the following is not one of the four kingdoms of eukaryotes?
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What is the dense portion of some cells containing nucleic acids?
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Which of the following birds are more closely related: Parus bicolor, Tachycineta bicolor, or Parus atricapillus?
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What is a species?
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What are the three domains?
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Name the six types of extremophiles.
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Name the four kingdoms in Domain Eukarya.
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Name the six kingdoms and which domain they belong in.
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What are organisms in Domain Archaea?
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Which domain(s) have a nucleus?
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What is the definition of Acidophiles/Alkaliphiles?
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You have discovered an organism that is multi-cellular and autotrophic. Its cells each have a nucleus. To which kingdom does this organism belong to? Explain how you know.
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Which classification level(s) do all these organisms share?
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Name two characteristics that all the organisms in the Kingdom Animalia have in common with organisms in Kingdoms Fungi and Plantae.
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List which organism(s) is (are) least similar to the majority.
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Which organism is most similar to a White-lipped Frog (Leptodactylus labialis)?
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What can a dichotomous key be used for?
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Study Notes
Taxonomy
- Taxonomy involves the scientific classification of organisms.
- It plays a crucial role in understanding biological relationships.
Genus in Scientific Names
- The genus is indicated by the first word in an organism's scientific name.
Eukaryotes
- Organisms with nuclei in their cells are called eukaryotes.
Carolus Linnaeus
- Scientist Carolus Linnaeus is recognized for grouping animals based on observable features.
Kingdoms of Eukaryotes
- Archaea is not included in the four kingdoms of eukaryotes.
Nucleus
- The nucleus is the dense part of a cell containing nucleic acids.
Related Species
- Parus bicolor and Parus atricapillus are closely related as they belong to the same genus, Parus.
Definition of Species
- A species consists of organisms that can interbreed and produce viable offspring.
Three Domains
- The three domains of life are Bacteria, Archaea, and Eukarya.
Extremophiles
- Six types of extremophiles include:
- Halophiles: thrive in high-salt environments
- Acidophiles: survive in highly acidic conditions
- Alkaliphiles: live in extreme alkaline environments
- Thermophiles: prefer hot environments from 41 to 100°C
- Psychrophiles: inhabit extremely cold areas like the Arctic and Antarctica
- Barophiles: flourish under high-pressure conditions
Four Kingdoms in Domain Eukarya
- The kingdoms are Fungi, Plantae, Animalia, and Protista.
Six Kingdoms and Their Domains
- Fungi (Eukarya)
- Plantae (Eukarya)
- Animalia (Eukarya)
- Protista (Eukarya)
- Eubacteria (Bacteria)
- Archaebacteria (Archaea)
Organisms in Domain Archaea
- Archaea are single-celled, prokaryotic organisms often classified as extremophiles.
Domain with Nuclei
- Domain Eukarya is the only domain containing organisms with nuclei.
Characteristics of Acidophiles/Alkaliphiles
- They convert hydrogen gas to methane using CO2 for energy.
- These organisms cannot survive in oxygen-rich environments as it is toxic to them.
- They act as decomposers in environments with low oxygen, such as swamps.
- They can inhabit intestinal tracts of cows, humans, and termites.
- They thrive in extreme pH conditions, either acidic or alkaline.
Classification of Multi-cellular, Autotrophic Organism
- A multi-cellular, autotrophic organism with nuclei belongs to the Kingdom Plantae due to its defining characteristics.
Common Classification Level
- All organisms mentioned generally fall under the classification level of Domain Eukarya.
Common Characteristics in Kingdoms
- Organisms in Kingdom Animalia share that they are multi-cellular and have nuclei with those in Fungi and Plantae.
Least Similar Organisms
- Organisms from Kingdom Fungi and Plantae, such as Mushroom and Pink Daffodil, are least similar to others.
Most Similar Organism to White-lipped Frog
- The Bottle Frog is the most similar organism to the White-lipped Frog (Leptodactylus labialis).
Dichotomous Key Usage
- A dichotomous key consists of paired descriptions that guide users in identifying organisms based on characteristics.
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Description
Test your knowledge on the classification of organisms in biology with this quiz. Explore concepts such as genus, species definition, eukaryotes, and the contributions of Carolus Linnaeus to taxonomy. Perfect for students studying biological sciences.
