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Introduction to Invertebrates Classification

12 Questions

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Introduction to Invertebrates Classification

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Questions and Answers

What is the Phylum of sponges?

Porifera (correct)

Cnidaria

Echinodermata

Mollusca

How do most invertebrates respire?

Through spiracles

Through lungs

Through gills

Through skin (correct)

What is the primary characteristic that distinguishes invertebrates?

Complete nervous system

Hard exoskeleton

Presence of a notochord

Possession of a backbone (correct)

How do most invertebrates reproduce?

Sexually through gamete fusion Signup and view all the answers

What is the main mode of nutrition for sponges?

Filter feeding Signup and view all the answers

What material stiffens the bodies of sponges?

Calcium carbonate Signup and view all the answers

What type of digestion occurs in sponges?

Intracellular digestion Signup and view all the answers

Which structure in sponges prevents the collapse of canals and chambers?

Spicules Signup and view all the answers

What is the unique feature of the canal system in sponges for transporting substances?

Flagellated chambers Signup and view all the answers

Which phylum exhibits a life cycle starting with a larva called a planula?

Cnidarian Signup and view all the answers

How do Cnidarians catch their prey?

Using nematocysts Signup and view all the answers

What is a defining characteristic of Cnidarians in terms of symmetry?

Radial symmetry Signup and view all the answers