Octopuses Quiz: questions and answers

1. What is the average life expectancy of giant Pacific octopus?

8 years

10 years

5 years

2. What is the scientific name of an octopus?

Selachimorpha

Anura

Octopoda

3. How many species of octopus exist?

300

200

50

4. What is the average size of smallest species of octopus?

2.5 cm

2 cm

3 cm

5. What is the largest octopus species?

Argonaut

Dumbo Octopus

Enteroctopus Dofleini

6. How many hearts does an octopus have?

3

1

2

7. How many percentage of oxygen is absorbed by octopus through the skin while resting?

41%

25%

3%

8. What is used by octopus for defensive purpose?

Ink Sac

Teeth

Head

9. What is the phylum of octopus?

Mollusca

Echinoderm

Chordata

10. Which octopus lacks the ink sac?

Argonaut

Dumbo Octopus

Cirrate/Cirrina

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Octopuses Quiz: questions and answers

Test yourself

1. What is the average life expectancy of giant Pacific octopus?

2. What is the scientific name of an octopus?

3. How many species of octopus exist?

4. What is the average size of smallest species of octopus?

5. What is the largest octopus species?

6. How many hearts does an octopus have?

7. How many percentage of oxygen is absorbed by octopus through the skin while resting?

8. What is used by octopus for defensive purpose?

9. What is the phylum of octopus?

10. Which octopus lacks the ink sac?

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