Podcast
Questions and Answers
Why is classifying flowering plants solely based on traits like color or height considered not meaningful?
Why is classifying flowering plants solely based on traits like color or height considered not meaningful?
- Because these traits do not reflect underlying similarities and differences among individuals. (correct)
- Because these traits are not observable in all plants.
- Because these traits change too rapidly over time.
- Because these traits are too complex to analyze.
Which of the following criteria is most important when classifying organisms?
Which of the following criteria is most important when classifying organisms?
- Dietary habits.
- Geographic location.
- Evolutionary relationships. (correct)
- Habitat preference.
What serves as the base for classifying organisms?
What serves as the base for classifying organisms?
- Ecological niche.
- Similarity in form or structure. (correct)
- Behavioral patterns.
- Genetic divergence.
What is the primary basis biologists use to classify all living things into groups?
What is the primary basis biologists use to classify all living things into groups?
Which statement accurately defines a species based on the text?
Which statement accurately defines a species based on the text?
Why is 'interbreeding' not a universally applicable criterion for species recognition?
Why is 'interbreeding' not a universally applicable criterion for species recognition?
Different species do not:
Different species do not:
In the taxonomic hierarchy, which level is more inclusive than a family?
In the taxonomic hierarchy, which level is more inclusive than a family?
Which of the following lists the taxonomic categories in the correct order from the least to the most inclusive?
Which of the following lists the taxonomic categories in the correct order from the least to the most inclusive?
What is a key characteristic of taxonomic categories, as they become more inclusive?
What is a key characteristic of taxonomic categories, as they become more inclusive?
How many species of animals are known?
How many species of animals are known?
Flashcards
How many species are known?
How many species are known?
Over one and a half million species of animals and over a half million species of plants.
What is classification based on?
What is classification based on?
Classification is based on relationship amongst individuals, that is, similarity in form or structure.
What defines a species?
What defines a species?
A species is a group of natural population which can interbreed freely among themselves and products fertile offsprings, but are reproductively isolated from all other such groups in nature.
Two Kingdoms
Two Kingdoms
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What are phyla?
What are phyla?
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What does a phylum divided into?
What does a phylum divided into?
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Basic unit of classification?
Basic unit of classification?
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What are taxa?
What are taxa?
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Order of taxonomic categories?
Order of taxonomic categories?
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Study Notes
- Over one and a half million species of animals and over half a million species of plants are known.
- To classify, species can be categorized based on color, height or other characteristics.
- This classification isn't meaningful since it does not show differences among individuals.
- All organisms are related at some point in evolutionary history.
- Sparrows are more closely related to pigeons than insects.
- Classification is based on relationship amongst individuals with similarities in form or structure.
- Biologists classify living things into groups by homologies, comparative biochemistry, cytology, and genetics.
- Large groups divide into smaller groups up to species level.
- A species is a group of natural population which can interbreed freely among themselves and produce fertile offsprings.
- Species are reproductively isolated from other groups in nature.
- "Interbreeding" cannot be used as a standard for species recognition among asexually reproducing organisms.
- Each species possesses its own distinct structural ,ecological and behavioral characteristics, which makes species independent evolutionary units.
- Different species do not exchange genes between them.
- Living things are divided into two kingdoms: plants and animals.
- Each kingdom is divided into phyla.
- Phyla are divided into classes.
- Classes are divided into orders.
- Orders are divided into families.
- A family contains related genera.
- A genus is composed of one or more species.
- Species are the basic unit of classification.
- Organisms are grouped into larger, more inclusive categories (taxa).
- Categories are more general than the ones below and have emergent properties.
- Taxonomic categories from species to kingdom form a hierarchy.
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