SUBKINGDOM PARAZOA Meaning and
Definition
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Subkingdom Parazoa refers to a taxonomic subdivision of the animal kingdom that includes organisms belonging to the phylum Porifera. The subkingdom Parazoa comprises animal species that are considered primitive and lacking well-defined tissues and organs.
Characterized by their simple structure, Porifera organisms are commonly known as sponges. These multicellular animals are filter feeders, living mostly in aquatic environments, such as oceans and freshwater bodies. Sponges possess a porous body with numerous small openings called ostia, which allow water to flow through their body structure. These organisms extract food particles, such as bacteria and organic matter, from the water passing through them.
One of the defining characteristics of the subkingdom Parazoa is the absence of true tissues or organs. Unlike animals belonging to the subkingdom Eumetazoa, Parazoans lack specialized cell types that are organized into distinct organs or systems. Instead, their body structure consists of a loose aggregation of different cell types, which collectively form a simple and relatively undifferentiated tissue called the mesohyl.
The subkingdom Parazoa also includes several evolutionary features that make these organisms distinct from other animal groups. For instance, they lack symmetry and exhibit various body shapes, ranging from asymmetrical to radially symmetrical. Additionally, their cells possess unique skeletal elements called spicules, which provide support and structural integrity to their bodies.
In summary, the subkingdom Parazoa represents a taxonomic classification of simple, primitive, and multicellular animals belonging to the phylum Porifera. This group is characterized by the absence of well-defined tissues and organs, and their body structure is characterized by porous openings for water circulation and a loose organization of different cell types.
Common Misspellings for SUBKINGDOM PARAZOA
- aubkingdom parazoa
- zubkingdom parazoa
- xubkingdom parazoa
- dubkingdom parazoa
- eubkingdom parazoa
- wubkingdom parazoa
- sybkingdom parazoa
- shbkingdom parazoa
- sjbkingdom parazoa
- sibkingdom parazoa
- s8bkingdom parazoa
- s7bkingdom parazoa
- suvkingdom parazoa
- sunkingdom parazoa
- suhkingdom parazoa
- sugkingdom parazoa
- subjingdom parazoa
- submingdom parazoa
- sublingdom parazoa
Etymology of SUBKINGDOM PARAZOA
The etymology of the phrase "Subkingdom Parazoa" can be broken down as follows:
1. Subkingdom: The term "sub-" in subkingdom means "under" or "below", indicating that it is a division within the broader category of "kingdom". The word "kingdom" in this context refers to the highest taxonomic rank in the classification of organisms.
2. Parazoa: The word "Parazoa" is derived from Greek roots. "Para-" means "beside" or "next to", while "zooa" refers to "animals". Therefore, "Parazoa" translates to "next to animals" or "beside animals", suggesting a lower level of complexity or organization compared to other animal groups.
In biological classification systems, the subkingdom Parazoa includes animals that lack true tissues, such as sponges (phylum Porifera).
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