Exam (elaborations)
UTA Zoology Lab 3 Questions With Complete Solutions
- Course
- Zoology
- Institution
- University Of Texas - Arlington
UTA Zoology Lab 3 Questions With Complete Solutions
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UTA Zoology Lab 3 Questions With Complete SolutionsAnnelids posses a closed ________________
_______________. Correct Answer Circulatory system.
Annelids posses a true ___________. Correct Answer Coelom.
Circular muscle allows earthworms to ____________________
Correct Answer stretch its body
Class Hirudinea are ___________ Correct Answer Leeches.
Define aortic Arches. Correct Answer Hearts
Define Metamerism Correct Answer Having a series of similar
linear body segments fundamentally similar in structure but not
exactly the same.
Describe Class Hirudinea Correct Answer Leeches, usually
ectoparasitic. They do not possess septa. They have fluid filled
spaces in their body called Lacunae that transport materials
throughout body.
Describe Class Oligochaeta. Correct Answer Includes
earthworms. They have few setae and few external features.
Describe Class Polychaeta Correct Answer Largest group of
annelids in terms of species number and diversity. They posses
many setae. Often have complex reproductive systems.
, Describe it. Correct Answer It is covered with fibrous looking
tissue that is actually its muscle that controls the shape.
Describe Nereis sp. Correct Answer Part of the Class
Polychaeta. Coastal, suspension feeder and carnivore. Has large
jaws kept inside or out while feeding made up of protein matrix
w/ zinc and copper.
Does Nereis reproduce? Correct Answer Yes.
Does the peristomium have any sensory structures? Correct
Answer Yes, it has 4 pairs of sensory tentacles called Cirri.
During development, where do new segments bud from?
Correct Answer They bud anteriorly from the most posterior
part. Therefore, they are the most posterior segments NOT
including the pygidium.
How many body segments? Correct Answer 34 body segments
In leeches, the coelom is divided by what? Correct Answer
Connective tissue into a system of spaces called lacunae.
In oligochaeta, what is the pharynx? Correct Answer The most
anterior end of the digestive tract.
In polychaetes each segment posseses _________. Correct
Answer Parapodia - Paired organs that serve as gills or
locomotor structures.
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