Lesson Worksheet: Using Classification Keys Science

In this worksheet, we will practice using classification keys to identify and group a variety of living things.

Q1:

Scientists classify living things according to their traits.

Which of the following is the correct definition for the word trait?

  • AThe way the organism behaves
  • BThe environment an organism lives in
  • CA type of adaptation
  • DA distinguishing characteristic

Q2:

The animal kingdom is divided into two groups, vertebrates and invertebrates.

What is a vertebrate?

  • AAn animal that has a backbone
  • BAn animal that does not have a skeleton
  • CAn animal that does not have a backbone
  • DAn animal that has a skeleton

Q3:

Identify which group this animal belongs to using the given key.

  • AFish
  • BMammal
  • CReptile
  • DBird
  • EAmphibian

Q4:

Which question could you ask to complete this branching key?

  • ADoes it have a long thin stem?
  • BDoes it have yellow petals?
  • CDoes it have three leaves?
  • DDoes it contain seeds?

Q5:

Identify which group this animal belongs to using the given key.

  • AReptile
  • BMammal
  • CBird
  • DAmphibian
  • EFish

Q6:

Identify which group this animal belongs to using the given key.

  • AFish
  • BReptile
  • CMammal
  • DBird
  • EAmphibian

Q7:

Identify which group this animal belongs to using the given key.

  • ABird
  • BMammal
  • CAmphibian
  • DReptile
  • EFish

Q8:

Which animal can be classified as a cold-blooded vertebrate?

  • ASpider
  • BLeech
  • CMillipede
  • DPeacock
  • ECrocodile

Q9:

Which definition describes a series of questions used to identify unknown plants or animals?

  • AAn encyclopedia
  • BA bar chart
  • CA pie chart
  • DA classification index
  • EA Venn diagram

Q10:

Scientists classify living things. What does classification mean?

  • AGrouping organisms that are similar
  • BDescribing the characteristics of an organism
  • CObserving organisms under a microscope
  • DCounting the number of organisms in a group
  • ECreating a display of animals in the classroom

This lesson includes 14 additional questions for subscribers.

Nagwa uses cookies to ensure you get the best experience on our website. Learn more about our Privacy Policy.