Nematoda: Phylum Quiz

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What is a characteristic feature of nematodes?

Lack of distinct alimentary canal

Possession of a syncytial epidermis (correct)

Absence of sexually dimorphic traits

Presence of circulatory and respiratory system

Where can free-living nematodes be found?

Only in marine environments

Exclusively in sediments of land biomes

In marine, freshwater environments, and soils of land biomes (correct)

Primarily in host organisms

How do nematodes reproduce?

Sexually with external fertilization

Through spore formation

Sexually with internal fertilization (correct)

Asexually through binary fission

What distinguishes parasitic nematodes from free-living nematodes?

Inhabitation of host organisms Signup and view all the answers

What is a distinguishing feature of the phylum Nematoda?

Molting of the cuticle Signup and view all the answers

What is the function of the cuticle in nematodes?

To maintain body shape and enable movement Signup and view all the answers

Which of the following is responsible for secreting the cuticle in nematodes?

Hypodermis Signup and view all the answers

In nematodes, what allows them to increase in size during different stages of development?

Molting of the cuticle Signup and view all the answers

Which order of nematodes is particularly common in soil?

Rhabditida Signup and view all the answers

How many orders of nematodes regularly occur in soil?

10 Signup and view all the answers

Nematoda: Phylum Quiz

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Questions and Answers

What is a characteristic feature of nematodes?

Where can free-living nematodes be found?

How do nematodes reproduce?

What distinguishes parasitic nematodes from free-living nematodes?

What is a distinguishing feature of the phylum Nematoda?

What is the function of the cuticle in nematodes?

Which of the following is responsible for secreting the cuticle in nematodes?

In nematodes, what allows them to increase in size during different stages of development?

Which order of nematodes is particularly common in soil?

How many orders of nematodes regularly occur in soil?

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