Nematode Overview

Question 1

What are the four general morphology factors of the Nematode?

Answer 1

1. Unsegmented (elongated)
2. Circular (cross section)
3. Vast size variation
4. Shape variations

Question 2

What are the three general shape variations of Nematodes?

Answer 2

1. Spherical
2. Whip- like
3. Terminal enlargements

Question 3

Nematodes are Dioecious which, means

Answer 3

Separate sexes

Question 4

Males have….

Answer 4

two spicules

Question 5

Females…

Answer 5

lay thousands of eggs per day

Question 6

Nematode GI tract distinctions

Answer 6

mouth variations like papillae or “teeth”

Question 7

What internal structure is extensive in the Nematode?

Answer 7

Reproductive tract

Question 8

What are the four nematode egg types?

Answer 8

1. Ascarid
2. Strongyle
3. Spiruroid
4. Trichuroid

Question 9

What are the characteristics of an Ascarid egg?

Answer 9

1. round/ oval
2. thick outer shell (rough or smooth)
3. single cell stage

Question 10

Strongyle egg characteristics

Answer 10

1. Oval/ elliptical
2. Thin smooth shell
3. Morula stage

Question 11

Characteristics of the Spiruroid egg

Answer 11

1. Oval/ rectangular
2. Thin smooth shell
3. First stage larva

Question 12

Trichuroid characteristics

Answer 12

1. Elliptical w polar plugs
2. Thick outer shell (smooth)
3. Single cell stage

Question 13

What are the three types of lifecycles for the Nematodes

Answer 13

Direct, Indirect, and Simple

Question 14

What is a direct lifecycle

Answer 14

No intermediate host

Question 15

What is an indirect lifecycle

Answer 15

Intermediate host(s)