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Annelids have a brain or cerebral ganglion that originates and usually resides in the head
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What features distinguish annelids from roundworms?
There's many of them, but here are some of the bigger ones; Annelids, unlike roundworms (or flatworms for that matter) are segmented. That is after all how they get their name (annelida = little ring). Annelids also have a very complex organ system. Roundworms only possess a reproduction system as they usually live in an organism's intestines and don't need to digest food. Annelids posses both a reproduction system, and a digestive system as well as a circulatory system. As they are true coelomates their organs and organ systems are organised rather than just kinda' being tossed in there. =)
What is more complex organism or organ system?
an organism because an organism can contain multiple organ systems
What the correct relationships from LEAST complex to MOST complex?
Organs, to Tissues, To Cells
Which group of organ systems is organized from the most complex to least complex?
Body systems, organs, tissues, cells
What level of organization is more complex than a system?
The level of organization more complex than a system is the organism. The organism is made up of multiple organ systems working together.
How are earthworms and ascaris similar?
Annelids are segmented whereas roundworms are not. Annelids have a true coelom while roundworms have a pseudocoelom. Annelids have a more complex nervous system than roundworms. Annelids have a more complex circulatory system than roundworms.
What features distinguish annelids from roundworms?
There's many of them, but here are some of the bigger ones; Annelids, unlike roundworms (or flatworms for that matter) are segmented. That is after all how they get their name (annelida = little ring). Annelids also have a very complex organ system. Roundworms only possess a reproduction system as they usually live in an organism's intestines and don't need to digest food. Annelids posses both a reproduction system, and a digestive system as well as a circulatory system. As they are true coelomates their organs and organ systems are organised rather than just kinda' being tossed in there. =)
What structures is the most complex is it the cell or organ system or organ or tissue?
organ system
How organ systems is most complex and fragile?
Organ systems are most complex and fragile starting with the atoms. The most complex organ systems is the organism. In between are the molecules, cell, tissue, organ, and organ system.
What is more complex organism or organ system?
an organism because an organism can contain multiple organ systems
What the correct relationships from LEAST complex to MOST complex?
Organs, to Tissues, To Cells
Is a organ more complex than a organ system?
The level of organization more complex than a system is the organism. The organism is made up of multiple organ systems working together.
What is the main excretory organ of annelids?
nephridia is the main excretory organ of annelida
Annelids are the first of the animal phyla studied to have what general characteristic?
Annelids are the first animal phyla to have a true body cavity (coelom), which is enclosed by mesoderm. This cavity enables more complex organ systems and allows for greater specialization of body functions.
What is the eukaryote lacking complex organ system?
protist
Which group of organ systems is organized from the most complex to least complex?
Body systems, organs, tissues, cells
What level of organization is more complex than a system?
The level of organization more complex than a system is the organism. The organism is made up of multiple organ systems working together.
