Podcast
Questions and Answers
What is the defining characteristic of a complete digestive system?
What is the defining characteristic of a complete digestive system?
- It serves as both mouth and anus
- The blood is circulated through a series of vessels of varying diameters
- It has two openings, mouth and anus (correct)
- It has only a single opening to the outside of the body
What type of circulatory system directly bathes the cells and tissues in blood?
What type of circulatory system directly bathes the cells and tissues in blood?
- Incomplete type
- Closed type
- Open type (correct)
- Single opening type
In which group of animals does the digestive system have only a single opening to the outside of the body?
In which group of animals does the digestive system have only a single opening to the outside of the body?
- Platyhelminthes (correct)
- Arthropods
- Echinoderms
- Chordates
What is the term for the pattern where organs have associated to form functional systems, each concerned with a specific physiological function?
What is the term for the pattern where organs have associated to form functional systems, each concerned with a specific physiological function?
What is the defining characteristic of an incomplete digestive system?
What is the defining characteristic of an incomplete digestive system?
What type of symmetry is commonly exhibited by sponges?
What type of symmetry is commonly exhibited by sponges?
What is the primary function of the water transport or canal system in sponges?
What is the primary function of the water transport or canal system in sponges?
What is the material that supports the body of sponges?
What is the material that supports the body of sponges?
How do sponges reproduce asexually?
How do sponges reproduce asexually?
What is the reproductive characteristic of sponges?
What is the reproductive characteristic of sponges?
Flashcards
Complete digestive system
Complete digestive system
A digestive system with two openings: a mouth and an anus.
Open circulatory system
Open circulatory system
A circulatory system where blood bathes body tissues directly.
Incomplete digestive system
Incomplete digestive system
A digestive system with a single opening serving as both mouth and anus.
Organ system level of organisation
Organ system level of organisation
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Sponges symmetry
Sponges symmetry
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Sponge water canal system
Sponge water canal system
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Sponge support
Sponge support
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Sponge asexual reproduction
Sponge asexual reproduction
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Sponge reproduction
Sponge reproduction
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Platyhelminthes digestive system
Platyhelminthes digestive system
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Study Notes
Digestive System
- A complete digestive system is characterized by having two openings: a mouth and an anus.
Circulatory System
- Open circulatory systems directly bathe cells and tissues in blood.
Body Structure
- Animals in the phylum Platyhelminthes (flatworms) have a digestive system with only one opening to the outside of the body.
Organ Systems
- The pattern of organs associated to form functional systems, each concerned with a specific physiological function, is called organ system organization.
Digestive System
- An incomplete digestive system is characterized by having only one opening, serving as both mouth and anus.
Body Symmetry
- Sponges commonly exhibit asymmetry or radial symmetry.
Water Transport System
- The primary function of the water transport or canal system in sponges is to bring in food and oxygen and remove waste products.
Body Support
- The material that supports the body of sponges is a skeleton made of spicules or spongin.
Reproduction
- Sponges reproduce asexually by budding, where a new individual grows from the body of the parent.
- Sponges are hermaphroditic, meaning they have both male and female reproductive cells.
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