Body Cavity Classification in Animals
10 Questions
1 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Which term is used for the animals possessing a body cavity that is not lined by mesoderm?

  • Triploblastic
  • Metamerism
  • Coelomates
  • Pseudocoelomates (correct)

What structure is mesodermally derived and forms a rod-like structure on the dorsal side during embryonic development?

  • Pseudocoelom
  • Notochord (correct)
  • Metamerism
  • Coelom

Which group of animals are classified as coelomates?

  • Aschelminthes
  • Annelids (correct)
  • Echinoderms
  • Platyhelminthes

What type of animals have a body cavity that is lined by mesoderm?

<p>Coelomates (A)</p> Signup and view all the answers

Which animals are classified as acoelomates?

<p>Platyhelminthes (C)</p> Signup and view all the answers

What is the term for the phenomenon where the body is internally and externally divided into segments?

<p>Metamerism (D)</p> Signup and view all the answers

In which animals is the mesoderm present as scattered pouches between ectoderm and endoderm?

<p>Aschelminthes (C)</p> Signup and view all the answers

What term is used for animals with a third germinal layer, mesoderm, between ectoderm and endoderm?

<p>Triploblastic (C)</p> Signup and view all the answers

Which characteristic defines animals possessing metamerism?

<p>Division into segments with organ repetition (C)</p> Signup and view all the answers

Animals like annelids and molluscs fall under which category based on their body cavity?

<p>Coelomates (C)</p> Signup and view all the answers

Flashcards

Pseudocoelomates

Animals with a body cavity not lined by mesoderm.

Notochord

Rod-like structure derived from mesoderm, present during embryonic development.

Coelomates

Animals that have a body cavity lined by mesoderm.

Acoelomates

Animals that lack a body cavity between ectoderm and endoderm.

Signup and view all the flashcards

Metamerism

Phenomenon where the body is divided into repeated segments.

Signup and view all the flashcards

Aschelminthes

Group of animals where mesoderm is in scattered pouches.

Signup and view all the flashcards

Triploblastic

Animals with three germ layers: ectoderm, endoderm, and mesoderm.

Signup and view all the flashcards

Platyhelminthes

Flatworms, which are classified as acoelomates.

Signup and view all the flashcards

Mesoderm

The middle germ layer in triploblastic animals, giving rise to muscles and organs.

Signup and view all the flashcards

Organ repetition

Characteristic of metamerism where organ systems appear in segments.

Signup and view all the flashcards

More Like This

Use Quizgecko on...
Browser
Browser