Are nematodes decomposers?
Given that they can attack and kill various organisms and also feed on various plants, some of the nematodes act as intermediate decomposers that are responsible for the breakdown of organic material that are then further broken down by other smaller microorganisms such as bacteria.
What is the morphology of nematode?
Nematodes are typically elongate, tapered at both ends, and bilaterally symmetrical. They vary in size from microscopic to nearly 1 m long. They are pseudocoelomates, like acanthocephalans. However, unlike the acanthocephalans, nematodes are covered with a tough, relatively impermeable cuticle.
Do Platyhelminthes have Endoskeletons?
Exoskeleton and endoskeleton are absent in members of phylum Platyhelminthes. These are the first group of animals where three primary germ layers develop, i.e. ectoderm, mesoderm and endoderm. All members are acoelomate, many are parasitic.
In what way does the phylum Platyhelminthes differ from the phylum Cnidaria?
Cnidarians are diploblastic, whereas Platyhelminthes are triploblastic. Platyhelminthes possess bilaterally symmetrical, soft, worm-like elongated bodies, whereas cnidarian possess radially symmetrical, soft, medusa-like or polyp-like body forms. … Cnidarians have cnidocytes, unlike the Platyhelminthes.
Are nematodes dimorphic?
The nematode family Diplogastridae, especially Pristionchus pacificus with its dramatic stomatal (feeding) dimorphism, has become an important model system to analyze the evolutionary and developmental aspects of polyphenism. However, this plasticity has not been confirmed in other nematode groups.
Spinal Nerve Meric Chart
Nematode movement
Lecture 3 -REPRODUCTIVE AND NERVOUS SYSTEM OF NEMATODE
Spinal Cord: Anatomy, Spinal Tracts & Pathways, Somatic Reflexes, Animation
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