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Chapter: Biology Practicals: Collecting Biology Specimens

Phylum Nematoda or Ascehelminthyes - Collecting Biology Specimens

Phylum Nematoda, also known as Aschelminthyes, includes round parasitic worms that cause infections in humans.

Phylum Nematoda or Ascehelminthyes

Roundworms

Phylum Nematoda, also known as Aschelminthyes, includes round parasitic worms that cause infections in humans.

 

The following are the features of the Phylum Nematoda

1.           They have unsegmented, cylindrical bodies with pointed ends.

2.           Their body is covered in a cuticle of protein.

3.           They have an unbranched gut from mouth to anus.

Collection

Roundworms can be found in the stomach of sh, in soil or stagnant water, or in the intestines of locally raised chicken.

Preservation

Organisms in Phylum Nematoda can be kept in labelled air-tight containers with formaldehyde solution.

Killing

Place the Nematoda into a formaldehyde solution.

Dissection

You can observe the unbranched gut of a Nematoda by making a lateral cut along the body and observing the internal structure of the organism.

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