Phylum Nematoda Flashcards
Nematoda Xtics
Roundworms
Pseudo ceolomates
Sexual dimorphism
Cosmopolitan
Cylindrical
Unsegmented
What constitutes the alimentary canal in Nematoda?
A straight tube from mouth to anus
Sexual nature of Nematoda
Dioecious (opposite of hermaphrodit)
What are the two classes in phylum Nematoda?
Adenophorea (Aphasmidia)
Secernentea (Phasmidia)
PHASMIDS- caudal sensory organs
Morphological features of higher animals first observed in Platyhelminthes?
Presence of nervous system
Excretory system
Osmoregulatory system
What are Nematoda classified based on
Presence of PHASMIDS (caudal sensory organs)
Economic and medical importance of nematodes
Help in controlling pest population in soil.
Aid nutrient cycle due to interaction with soil microbes; fungi, bacteria.
Biological indicators (of soil health).
Disease causing; filariasis, ascariasis
