Worms 2 : Nematoda MHS Douglas 2021

Worms 2 : Nematoda MHS Douglas 2021

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Nematoda are the

• flatworms

• roundworms

• segmented worms

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Unlike the flatworms, Nematoda usually have

• two openings (mouth and anus)

• both male and female organs

• thin skin

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Having a complete digestive tract means Nematoda have

• Organs for digestion between mouth and anus

• one cavity to digest and breathe

• a mouth that is also an anus functionally

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Similar to Madusa form of Cnidaria, Roundworms are commonly

• dioecious

• monoecious

• hermaphorditic

• umbrella shaped

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The roundworm has a special tool or organ for copulation, or transfer of sperm. This is useful for

• internal fertilization

• external fertilization

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roundworm species may be either parasitic or freeliving

• true

• false

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Children often get pinworms by

• sucking on their hands when dirty

• eating infected food

• kissing their mothers

• sitting in the same class with someone infected

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hookworms end up in the host by

• crawling on them from the soil

• swimming

• being ingested

• saliva transfers

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Secernentea are a class of worms that are

• mostly parasites

• free living flatworms

• free living roundworms

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swelling in these pictures are caused by a

• larva of the parasitic roundworm

• disease of the lymph nodes