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Phylum Tardigrada - Water Bears and Their Unique Characteristics

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Phylum Tardigrada - Water Bears and Their Unique Characteristics

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Questions and Answers

Which phylum do velvet worms belong to?

Tardigrada

Onychophora (correct)

Panarthropoda

Cephalochordata

What is the defining characteristic of the phylum Tardigrada (water bears)?

They have 8 pairs of jointed legs

They have unjointed legs (correct)

They are usually between 0.1 - 0.5 mm in size

They are semi-aquatic to aquatic creatures

What is the meaning of the scientific name 'Tardigrada'?

Water-dwelling

Slow-moving (correct)

Many-legged

Claw-bearing

Where can Tardigrada (water bears) be found?

In a variety of habitats including moss, soil, forest litter, marine and freshwater environments Signup and view all the answers

How do the legs of Tardigrada (water bears) differ from the legs of arthropods?

Tardigrada have unjointed legs Signup and view all the answers

Which of the following is not part of the Panarthropoda superphylum?

Cephalochordata (lancelets) Signup and view all the answers

Which of the following is the largest known species of Tardigrada (water bear)?

1.3 mm Signup and view all the answers

What is the primary mode of locomotion for Tardigrada (water bears)?

Crawling Signup and view all the answers

Which of the following is not a characteristic shared by Onychophora (velvet worms) and Tardigrada (water bears)?

Having a hard exoskeleton Signup and view all the answers

What is the main difference between Onychophora (velvet worms) and Tardigrada (water bears) in terms of their ancestral relationship to vertebrates?

Onychophora are more closely related to vertebrates Signup and view all the answers