32 Questions
Which phylum contains classes Turbellaria, Trematoda, and Cestoda?
Phylum Platyhelminthes
In which phylum is the body covered by cuticle and syncytial epidermis?
Phylum Nematoda
Which phylum has a true coelom lined by epithelium in the body cavity?
Phylum Annelida
Which phylum has classes with both free-living and endoparasitic species?
Phylum Platyhelminthes
In which phylum are the sexes separate, with males being smaller than females?
Phylum Nematoda
Which phylum has excretion with the help of characteristic nephridia?
Phylum Annelida
Which phylum has a circulatory system of open type?
Arthropoda
Which phylum has hemoglobin dissolved directly in the plasma?
Annelida
Which phylum has a nervous system consisting of a nerve ring and a double ventral nerve cord with segmental ganglia?
Annelida
Which phylum has locomotion with the help of setae or parapodia?
Annelida
Which phylum has a complete digestive system?
Arthropoda
Which phylum has respiration through gills, trachea, or book lungs?
Arthropoda
Which phylum has excretion through coxal glands or malpighian tubules?
Arthropoda
Which phylum has cilia totally absent in any part of the body?
Arthropoda
Which phylum has a free living form found most in soil?
Annelida
Which phylum has a free living marine forms?
Arthropoda
Platyhelminthes is divided into three classes: Turbellaria, Trematoda, and Cestoda.
True
Nematoda has a complete digestive system with both mouth and anus.
True
Annelida's body wall consists of cuticle, epidermis, and musculature.
True
Platyhelminthes includes both free-living and endoparasitic species.
True
Nematoda has a respiratory and circulatory system.
False
Annelida's body cavity is a pseudocoelom.
False
Annelids have a closed circulatory system and hemoglobin dissolved directly in the plasma.
True
Annelids have a nervous system consisting of a nerve ring and a double ventral nerve cord with segmental ganglia.
True
Annelids use setae or parapodia for locomotion.
True
Annelids reproduce only by sexual methods.
False
All annelids have a free-living habitat.
False
Arthropods have a body made up of a hard, impermeable substance called chitin.
True
Arthropods have a complete digestive system.
True
Arthropods have an open circulatory system.
True
Arthropods have exoskeleton made up of a hard, impermeable substance called chitin.
True
Arthropods have a nervous system consisting of a nerve ring and a double ventral nerve cord.
True
Study Notes
Phylum Platyhelminthes
- Consists of three classes: Turbellaria, Trematoda, and Cestoda
- Includes both free-living and endoparasitic species
- Excretion occurs with the help of characteristic nephridia
- Sexes are separate, with males being smaller than females
- Cilia are totally absent in any part of the body
Phylum Nematoda
- Has a complete digestive system with both mouth and anus
- Has a respiratory and circulatory system
- Has no excretory system with coxal glands or malpighian tubules
- Body is not covered by cuticle and syncytial epidermis
Phylum Annelida
- Body wall consists of cuticle, epidermis, and musculature
- Body cavity is a true coelom lined by epithelium
- Has a closed circulatory system and hemoglobin dissolved directly in the plasma
- Has a nervous system consisting of a nerve ring and a double ventral nerve cord with segmental ganglia
- Uses setae or parapodia for locomotion
- Reproduces only by sexual methods
- Has a free-living habitat, often found in soil
- Has a complete digestive system
- Respiration occurs through gills, trachea, or book lungs
Phylum Arthropoda
- Body is made up of a hard, impermeable substance called chitin
- Has a complete digestive system
- Has an open circulatory system
- Has an exoskeleton made up of a hard, impermeable substance called chitin
- Has a nervous system consisting of a nerve ring and a double ventral nerve cord
- Has a free-living marine form
Test your knowledge of the characteristics, classes, and examples of the phylum Platyhelminthes and Nematoda. Learn about their habitats, digestive systems, and general features.
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