7 Levels of Classification Flashcards

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Questions and Answers

What is the broadest group in classification?

Kingdom (correct)

Phylum

Genus

Species

What level of classification is Phylum?

2nd level

What is the 7th level of classification?

Species

What is the 6th level of classification?

Genus Signup and view all the answers

What defines organisms within the Species level?

The ability to breed and produce offspring of the same kind. Signup and view all the answers

List the 7 levels in order from most broad to most specific.

Kingdom, Phylum, Class, Order, Family, Genus, Species Signup and view all the answers

How is the scientific name always written?

Genus name is capitalized, species name is in all lower case and it is written in italics. Signup and view all the answers

The animal group is divided into _ ____.

35 phyla Signup and view all the answers

Animals are either _ or ___.

vertebrates or invertebrates Signup and view all the answers

Plants are either _ or ___.

vascular or non-vascular Signup and view all the answers

Organisms are divided into the kingdom based on their ability to 1)______ or their 2)_.

make food, number of cells Signup and view all the answers

What is the 3rd level of classification?

Class Signup and view all the answers

What is the 4th level of classification?

Order Signup and view all the answers

What is the 5th level of classification?

Family Signup and view all the answers

What is the largest group of the Kingdom?

Animals Signup and view all the answers

What is the 2nd largest group of the kingdom?

Plants Signup and view all the answers

What is Fungi known as in the kingdom?

The 'decomposer group' Signup and view all the answers

What is the smallest group of the kingdom?

Protists Signup and view all the answers

What group is known as 'bacteria' in the kingdom?

Monerans Signup and view all the answers

What is a prokaryotic organism?

A single-celled organism that does not have a nucleus. Signup and view all the answers

What is an autotroph?

An organism that has the ability to make its own food. Signup and view all the answers

What is a heterotroph?

An organism that must consume its food. Signup and view all the answers

Study Notes

Levels of Classification

Consists of seven hierarchical categories: Kingdom, Phylum, Class, Order, Family, Genus, Species.
Progresses from broadest (Kingdom) to most specific (Species).

Kingdom

Broadest classification group, encompassing five main categories: Animals, Plants, Fungi, Protists, and Monerans.
Animals are the largest kingdom, composed of multi-celled, eukaryotic organisms.
Plants constitute the second largest kingdom, also multi-celled and eukaryotic.
Fungi includes decomposers like yeast, molds, and mushrooms.
Protists are the smallest group, characterized as single-celled and eukaryotic.
Monerans consist of bacteria, single-celled and prokaryotic organisms.

Scientific Nomenclature

Scientific names follow a specific format: Genus name is capitalized, Species name is in all lower case, both italicized.
Genus represents the 6th level of classification, while Species denotes the 7th and final level.
Species is defined by the organisms' ability to breed and produce fertile offspring.

Classification Hierarchy

7 levels in order: Kingdom, Phylum, Class, Order, Family, Genus, Species.
Each subsequent level becomes more specific in categorizing organisms.

Types of Organisms

Organisms are classified based on:
- Ability to produce food: Autotrophs make their own food (e.g., plants, some protists).
- Cellular structure: Heterotrophs must consume food (e.g., animals, fungi, some protists).

Phyla and Types of Animals and Plants

Animal kingdom divided into 35 phyla.
Animals categorized as vertebrates (with backbone) or invertebrates (without backbone).
Plants categorized as vascular (with vascular tissue for transport) or non-vascular (lacking such tissue).

Cell Structure

Prokaryotic organisms (e.g., Monerans) lack a nucleus, distinguishing them from eukaryotic organisms (e.g., Animals, Plants, Fungi, Protists) which have a defined nucleus.

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Description

Explore the key terms and definitions related to the seven levels of biological classification. This quiz covers fundamental concepts such as Kingdom, Phylum, Genus, and Species, which are essential for understanding taxonomy. Perfect for students studying biology or anyone interested in the classification of life.