Examen 1 Flashcards
What phylum do Annelids belong to?
Annelids belong to the phylum Annelida.
True or False: Annelids are segmented worms.
True. Annelids are segmented worms.
What is the body structure of Annelids characterized by?
The body structure of Annelids is characterized by repeated segments.
Fill in the blank: Annelids have a _________ circulatory system.
Annelids have a closed circulatory system.
What type of symmetry do Annelids exhibit?
Annelids exhibit bilateral symmetry.
What are the two main classes of Annelids?
The two main classes of Annelids are Polychaeta and Oligochaeta.
True or False: Annelids have a centralized nervous system.
True. Annelids have a centralized nervous system.
What is the main function of setae in Annelids?
The main function of setae in Annelids is for locomotion.
Fill in the blank: Annelids have a _________ excretory system.
Annelids have a metanephridia excretory system.
What is the role of the coelom in Annelids?
The coelom in Annelids acts as a hydrostatic skeleton.
True or False: Annelids exhibit cephalization.
True. Annelids exhibit cephalization.
What is the importance of Annelids in marine ecosystems?
Annelids play a crucial role in nutrient cycling in marine ecosystems.
Fill in the blank: Annelids have a _________ digestive system.
Annelids have a complete digestive system.
What is the function of nephridia in Annelids?
Nephridia in Annelids function in excretion and osmoregulation.
True or False: Annelids are hermaphroditic.
True. Annelids are hermaphroditic.
What is the primary diet of Annelids?
The primary diet of Annelids consists of detritus and small organisms.
Fill in the blank: Annelids have a _________ nervous system.
Annelids have a ladder-like nervous system.
What is the role of the prostomium in Annelids?
The prostomium in Annelids is involved in sensory perception and feeding.
True or False: Annelids have a closed circulatory system.
True. Annelids have a closed circulatory system.
What is the function of parapodia in Polychaeta Annelids?
Parapodia in Polychaeta Annelids are used for locomotion and gas exchange.
Fill in the blank: Annelids reproduce _________.
Annelids reproduce sexually.
What is the significance of Annelids in soil ecosystems?
Annelids play a vital role in soil aeration and nutrient cycling in soil ecosystems.
What is the primary respiratory organ in Annelids?
The primary respiratory organ in Annelids is the skin.
Fill in the blank: Annelids exhibit _________ development.
Annelids exhibit indirect development.
