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Introduction to Pseudocoelomates Quiz

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Questions and Answers

What is the function of the pseudocoel in pseudocoelomates?

To aid in hydrostatic support like a skeleton

To store waste throughout the body for processing

To provide a space for the development of sophisticated structures

To facilitate fluid circulation for waste storage (correct)

How does the nematode exhibit uniformity in its external anatomy?

By having a high-pressure hydrostatic internal skeleton

By having a multilayer hypodermis (correct)

By lacking longitudinal muscles but having circular ones

By having alternating contractions for locomotion

What drives the movement of nematodes?

Circular muscles

Undulating contractions of longitudinal muscles (correct)

Cilia

External segmentation

How do parasitic nematodes exist?

By returning pressurized pseudocoel body to normal shape Signup and view all the answers

In what way do pseudocoelomates differ from animals with a true coelom?

They possess a fluid-filled pseudocoel instead of a true coelom Signup and view all the answers

What is the role of the cuticle in nematodes?

To cover and protect the body, preventing desiccation Signup and view all the answers

What is a characteristic of parasitic nematodes?

They have extensive migrations within vertebrates. Signup and view all the answers

What is a common pathology associated with parasitic nematodes?

Ground itch Signup and view all the answers

What is the reproductive capacity of parasitic nematodes in comparison to other animals?

Greater than non-parasitic sponges. Signup and view all the answers

What is the significance of parasitic intestinal-nematodes like American Hookworm?

Infect billions of people worldwide. Signup and view all the answers

Which condition is associated with parasitic filarial nematodes like Wuchereria bancrofti?

Swelling of subcutaneous tissue caused by drainage issues. Signup and view all the answers

Where do adult parasitic nematodes primarily reside within their hosts?

Small intestine Signup and view all the answers