Class Holothuroidea (Sea Cucumbers) Flashcards

What are tentacles in sea cucumbers?

What is the function of the pharynx in sea cucumbers?

Describe the stomach's characteristics in sea cucumbers.

What is the role of the intestine in sea cucumbers?

What does the cloaca do in sea cucumbers?

What is the function of the anus in sea cucumbers?

What are tube feet used for in sea cucumbers?

What is the purpose of gonads in sea cucumbers?

What is the function of respiratory trees in sea cucumbers?

Anatomy and Functions of Holothuroidea (Sea Cucumbers)

Tentacles: Modified tube feet around the mouth; adapted for capturing food particles from the water.
Pharynx: Connects the mouth to the stomach; essential for transporting food during digestion.
Stomach: Highly reduced organ; functions in food storage and initial digestion.
Intestine: Site for final digestion and nutrient absorption after food passes from the stomach.
Cloaca: Serves multiple functions including excretion and reproduction; facilitates the movement of seawater in and out of the respiratory trees for ventilation.
Anus: Plays a key role in egestion; regulates the expulsion of undigested food (feces).
Tube Feet: Sparse distribution along the body; organized in five longitudinal rows; primarily used for locomotion.
Gonad: Responsible for gamete production; plays a crucial role in the reproductive process of sea cucumbers.
Respiratory Trees: Specialized structures for gas exchange; essential for respiration and maintaining oxygen levels in body fluids.

Test your knowledge of Holothuroidea with these flashcards. Each card features a term related to sea cucumbers, alongside its definition to enhance your understanding. Perfect for students and enthusiasts alike!