What is nematoda ?write it's characterstics , and it's structure with example.
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The Phylum Nematoda consists of the species commonly known as roundworms.
There are approximately 12,000 described species, but the actual number could be many times higher.
Nematode worms are extremely abundant; often, several hundred species, and as many as a million individuals, inhabit a square yard of soil.
Nematodes are also extremely varied ecologically. They are found in almost every imaginable habitat, including terrestrial (land-based), freshwater, and saltwater ecosystems, as well as within other organisms as parasites.
Characteristics of Nematoda:-
1)Bilaterally symmetrical, and vermiform.
2)Body has more than two cell layers, tissues and organs.
3)Body cavity is a pseudocoel, body fluid under high pressure.
4)Body possesses a through gut with a subterminal anus.
5)Body covered in a complex cuticle.
6)Has a nervous system with pharyngeal nerve ring.
7)Has no circulatory system (no blood system).
8)Reproduction normally sexual and gonochoristic.
9)Feed on just about everything.
10)Live just about everywhere, many species are endoparasites.
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plz mark it as brainalist one...
The Phylum Nematoda consists of the species commonly known as roundworms.
There are approximately 12,000 described species, but the actual number could be many times higher.
Nematode worms are extremely abundant; often, several hundred species, and as many as a million individuals, inhabit a square yard of soil.
Nematodes are also extremely varied ecologically. They are found in almost every imaginable habitat, including terrestrial (land-based), freshwater, and saltwater ecosystems, as well as within other organisms as parasites.
Characteristics of Nematoda:-
1)Bilaterally symmetrical, and vermiform.
2)Body has more than two cell layers, tissues and organs.
3)Body cavity is a pseudocoel, body fluid under high pressure.
4)Body possesses a through gut with a subterminal anus.
5)Body covered in a complex cuticle.
6)Has a nervous system with pharyngeal nerve ring.
7)Has no circulatory system (no blood system).
8)Reproduction normally sexual and gonochoristic.
9)Feed on just about everything.
10)Live just about everywhere, many species are endoparasites.
hope u like answer. ..
plz mark it as brainalist one...
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