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Life Science: 7th Grade > Classification > Flashcards

Classification Flashcards

1
Q

What is taxonomy?

A

The branch of science concerned with the classification of organisms

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2
Q

Who was Carolus Linnaeus?

A

Responsible for the development of the 7 level classification system and binomial nomenclature (naming organisms by genus and species)

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3
Q

What does our current classification system include?

A

Linnaeus’ 7 levels and an additional level, DOMAIN

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4
Q

Why do we classify?

A

To uncover additional information about the Earth, to organize and name organisms, and to describe evolutionary relationships between organisms

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5
Q

What is our current classification system?

A 
DOMAIN
KINGDOM
PHYLUM
CLASS
ORDER
FAMILY
GENUS
SPECIES
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6
Q

What are the three domains of life?

A

Introduced by Carl Woese in 1977:

  • ARCHAEA
  • BACTERIA
  • EUKARYA
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7
Q

What does the ARCHAEA domain consist of?

A

PROKARYOTES that live in harsh environments

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8
Q

What does the BACTERIA domain consist of?

A

BACTERIA that can live in almost any environment

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9
Q

What does the EUKARYA domain consist of?

A

All EUKARYOTES

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10
Q

What are the six kingdoms of life?

A
  • Plants
  • Animals
  • Fungi
  • Protists
  • Archaeabacteria
  • Eubacteria
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11
Q

Organism are place in kingdoms by:

A
  • Cell type (complex or simple)
  • Their ability to make food
  • The number of cells present within the organism
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12
Q

Archaebacteria:

A
  • Prokaryotes
  • Can be autotrophic or heterotrophic
  • Unicellular
  • Live in extreme environments (hot springs)
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13
Q

Eubacteria:

A
  • Prokaryotes
  • Can be autotrophic or heterotrophic
  • Unicellular
  • Can be helpful or harmful
  • Live in almost all environments
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14
Q

Fungi:

A
  • Eukaryotes
  • Heterotrophic
  • Can be unicellular or multicellular
  • Most feed on dead/decaying organisms
  • Live in most environments (shady and moist)
  • Examples: mushrooms, yeast, and mold
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15
Q

Protists:

A
  • Eukaryotes
  • Can be autotrophic or heterotrophic
  • Can be unicellular or multicellular
  • Live in moist environments and can move on their own
  • Examples: paramecium, euglena, and amoeba
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16
Q

Animals (kingdom):

A
  • Eukaryotes
  • Heterotrophic
  • Multicellular
  • Have abilities to locate, capture, eat, and digest food
  • Live in most environments
  • Examples: birds, horses, and humans
17
Q

Plants (kingdom):

A
  • Eukaryotes
  • Autotrophic
  • Multicellular
  • Without plants, no life would exist
  • Examples: dandelions, moss, and trees
18
Q

What is a phylum?

A

The rank of classification below kingdom and before class: organisms within the same phylum have the same general body plan

19
Q

Types of Body Symmetry:

A

Asymmetry: No symmetry
Radial symmetry: Circular shape
Bilateral symmetry: Identical right and left halves

20
Q

Levels of Organization:

A

Cellular-
The simplest animals are made of independent cells (sponges)
Tissue-
Cells work together to form specialized tissues like muscle tissue (jellyfish)
Organs-
Tissues work together to form organs that do a specific job (turtles)

21
Q

Phylum: Rotifera

A
  • Bilaterally symmetrical
  • Organ system level
  • Microscopic, mostly aquatic
    ex: zooplankton
22
Q

Phylum: Nematoda

A
  • Bilaterally symmetrical
  • Organ system level (digestive system)
  • Unsegmented, smooth, strand-lie worms (up to 4 feet in length), many are parasitic
    ex: hookworms, pinworms
23
Q

Phylum: Annelida (Segmented Worms)

A
  • Bilaterally symmetrical
  • Organ system level (nervous, digestive system)
  • Bristle-like setae for movement
  • Live in nearly all environments, long and narrow bodies, segmented
    ex: earthworms
24
Q

Phylum: Mollusca

A
  • Bilaterally symmetrical
  • Organ system level (nervous, circulatory system)
  • Live in nearly all environments, soft bodies, muscular foot for movement
    ex: snails, clams
25
Q

Phylum: Arthropoda

A

-Bilaterally symmetrical
-Organ system level (nervous, circulatory system)
-Body has 3 main sections: segmented body
Head, thorax and abdomen
-Chitinous exoskeleton (tough and semitransparent), live in almost all environments
ex: crabs and insects

Life Science: 7th Grade (4 decks)

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