8 Questions
What is the name of the classification system that categorizes living organisms into five kingdoms?
Five Kingdom Classification System
Which kingdom includes Eubacteria and Archeobacteria?
Monera
What is the primary mode of nutrition for fungus-like protists?
External digestion
What is the gelatinous matrix that supports the skeletal elements in a sponge's body?
Mesohyl
How many main types of canal systems are found in sponges?
Three
What is the simplest form of canal system found in sponges?
Asconoid
What is the function of the skeletal elements in a sponge's body?
Support
Which type of canal system is found in most modern sponge species?
Leuconoid
Study Notes
Five Kingdom Classification System
- The classification system consists of five kingdoms: Monera, Protista, Fungia, Plantae, and Animalia.
Kingdom Protista
- The kingdom Protista includes eukaryotic organisms that do not fit into any of the other four kingdoms.
- Protists can be classified into three categories based on their mode of nutrition:
- Animal-like protists that consume other organisms.
- Plant-like protists that produce their own food through photosynthesis.
- Fungus-like protists that obtain food by external digestion, either as decomposers or parasites.
Sponges
- The body of a sponge is a collection of a few different types of cells loosely arranged in a gelatinous matrix called a mesohyl.
- The mesohyl is the connective tissue of a sponge body and is supported by skeletal elements.
- The skeletal elements of sponges are variable and important in taxonomy.
Canal Systems in Sponges
- There are three main types of canal systems in sponges: Asconoid, Syconoid, and Leuconoid.
- Asconoid sponges have canals that run straight through the sponge body.
- Syconoid sponges have canals that are branched and do not allow water to flow straight through to the spongocoel.
- Leuconoid sponges have a more complicated canal system with longer and more branched canals.
Learn about the five kingdoms of life, including Monera, Protista, Fungia, Plantae, and Animalia. Understand the characteristics of each kingdom and how they are classified.
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