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Using classification keys

4th grade (Year 5 in England) · 16 questions · Common Core: NGSS.SEP 4, NGSS.3-LS4-2 · England: KS2 Y4 Living things and their habitats, KS2 Y6 Living things and their habitats

Name

Date

Score/ 16

1
Question 1
Key: 1. Has legs? Yes → go to 2. No → go to 3. 2. Has 6 legs? Yes → beetle. No → spider. 3. Has a shell? Yes → snail. No → earthworm. An animal has 8 legs. What is it?
- A. spider
- B. beetle
- C. snail
- D. earthworm
2
Question 2
Carl Linnaeus gave each species a two-part scientific name. Which is an example?
- A. Mammal Animal
- B. Homo sapiens
- C. Tree Plant
- D. Big Cat
3
Question 3
Which question would split a snake and a lizard?
- A. Does it have legs?
- B. Does it have scales?
- C. Does it have a backbone?
- D. Is it a reptile?
4
Question 4
Key: 1. Has feathers? Yes → go to 2. No → go to 3. 2. Can fly? Yes → robin. No → penguin. 3. Has fur? Yes → rabbit. No → frog. An animal has feathers but cannot fly. What is it?
- A. frog
- B. penguin
- C. rabbit
- D. robin
5
Question 5
Carl Linnaeus gave each species a two-part scientific name. Which is an example?
- A. Big Cat
- B. Homo sapiens
- C. Mammal Animal
- D. Tree Plant
6
Question 6
Which question would split a snake and a lizard?
- A. Does it have legs?
- B. Does it have a backbone?
- C. Does it have scales?
- D. Is it a reptile?
7
Question 7
Key: 1. Has needle-shaped leaves? Yes → go to 2. No → go to 3. 2. Needles in bunches of two? Yes → pine. No → spruce. 3. Leaves with lobes (rounded bumps)? Yes → oak. No → beech. A tree has needles in bunches of two. What is it?
- A. oak
- B. beech
- C. pine
- D. spruce
8
Question 8
What are microorganisms?
- A. baby animals
- B. tiny plastic pieces
- C. living things too small to see without a microscope
- D. very small rocks
9
Question 9
Which question would split a crab and a jellyfish?
- A. Is it an animal?
- B. Does it have legs?
- C. Is it alive?
- D. Does it live in the sea?
10
Question 10
Key: 1. Has needle-shaped leaves? Yes → go to 2. No → go to 3. 2. Needles in bunches of two? Yes → pine. No → spruce. 3. Leaves with lobes (rounded bumps)? Yes → oak. No → beech. A tree has flat leaves with no lobes. What is it?
- A. beech
- B. oak
- C. spruce
- D. pine
11
Question 11
What are microorganisms?
- A. living things too small to see without a microscope
- B. tiny plastic pieces
- C. baby animals
- D. very small rocks
12
Question 12
What makes a good question in a classification key?
- A. It asks which animal you like best.
- B. It has many possible answers.
- C. It has a clear yes or no answer you can observe.
- D. It asks whether the animal is cute.
13
Question 13
Key: 1. Has needle-shaped leaves? Yes → go to 2. No → go to 3. 2. Needles in bunches of two? Yes → pine. No → spruce. 3. Leaves with lobes (rounded bumps)? Yes → oak. No → beech. A tree has needles in bunches of two. What is it?
- A. oak
- B. beech
- C. spruce
- D. pine
14
Question 14
Carl Linnaeus gave each species a two-part scientific name. Which is an example?
- A. Tree Plant
- B. Homo sapiens
- C. Mammal Animal
- D. Big Cat
15
Question 15
Which question would split a bat and a pigeon?
- A. Is it a vertebrate?
- B. Does it have feathers?
- C. Does it have wings?
- D. Can it fly?
16
Question 16
Key: 1. Has legs? Yes → go to 2. No → go to 3. 2. Has 6 legs? Yes → beetle. No → spider. 3. Has a shell? Yes → snail. No → earthworm. An animal has 8 legs. What is it?
- A. beetle
- B. spider
- C. snail
- D. earthworm

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Answer key: Using classification keys

1. A. spider
2. B. Homo sapiens
3. A. Does it have legs?
4. B. penguin
5. B. Homo sapiens
6. A. Does it have legs?
7. C. pine
8. C. living things too small to see without a microscope
9. B. Does it have legs?
10. A. beech
11. A. living things too small to see without a microscope
12. C. It has a clear yes or no answer you can observe.
13. D. pine
14. B. Homo sapiens
15. B. Does it have feathers?
16. B. spider