O LevelBiologyCambridgeExam Questions2. Classification2.1 Concept & Use of a Classification System

Concept & Use of a Classification System (Cambridge O Level Biology)

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2.1 Concept & Use of a Classification System

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2.1 Concept & Use of a Classification System

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The image below shows a house mouse, whose scientific name is Mus musculus.

1-1-image-1-mouse

Which genus does it belong to?

  • Mammal

  • musculus

  • Mus

  • Vertebrate

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The list below shows the binomial names for eight animals.

Canis lupus
Cygnus buccinator
Dasypus novemcinctus
Dasyurus maculatus
Equus burchelli
Eumetopias jubatus
Felis chaus
Felis lybica

Which two animals are most closely related?

  • Dasypus novemcinctus & Dasyurus maculatus

  • Felis chaus & Felis lybica

  • Cygnus buccinator & Dasyurus maculatus

  • Equus burchelli & Eumetopias jubatus

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Identify the arthropods shown using the key below.

1-1-image-7-dichotomous-key

1. Body divided into segments........................................

    Body not divided into segments..................................

go to 2

go to 3

2. Body has one pair of legs per segment ……………………..

    Body has two pairs of legs per segment..............................

Species W

Species X

3. One pair of antennae ………………………………………….

    Two pairs of antennae ………………………………………...

Species Y

Species Z
  Arthropod 1 Arthropod 2
A Species Y Species W
B Species W Species Z
C Species Z Species Y
D Species Z Species W

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    The image below shows a leaf from a plant.

    1-1-image-6-leaf

    Identify the plant to which the leaf belongs using the dichotomous key below.

    1-1-mcq-q4-m

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      Use the key to identify which group fish are classified as.

      1. Fur absent  ……………………………………………………..

          Fur present  …………………………………………………….

      go to 2

      mammals 

      2. Beak absent …………………………………………………….

          Beak present  …………………………………………………..

      go to 3

      group A

      3. Moist skin………………………………………………………..

          Dry, scaly skin  ………………………………………………....

      go to 4

      group B

      4. No limbs …………………………………………………...……

          Four limbs ……………………………………………………....

      group C

      group D

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