OL-LEC-3 NEMATODES

Question 1

Nematoda are generally called

Answer 1

Roundworms

Question 2

Adult shape of nematodes

Answer 2

cylindrical

Question 3

General characteristics of nematodes

Answer 3

Unsegmented adult forms
Has mouth, esophagus, and anus
Diecious

Question 4

Method of reproduction

Answer 4

oviparous
larvaepartus
ovoviviparous

Question 5

Method of infection

Answer 5

Ingestion of egg
Penetration of larvae through surfaces
Arthropod vector
Ingestion of encysted larvae

Question 6

Means thread, named from?

Answer 6

Nema

Question 7

Many species are free living in?

Answer 7

Salt or fresh water
Mud or soil

Question 8

General morphology of nematodes

Answer 8

Elongated, cylindrical, bilaterally symmetrical, unsegmented with tapering ends

covered with tough cuticle which may be smooth, striated, bossed or spiny

Question 9

nematodes that are <5mm

Answer 9

T. spiralis, T. stercoralis

Question 10

nematodes that are more than 1m

Answer 10

D. medinensis

Question 11

which sexual orientation are generally smaller in nematodes

Answer 11

Males

Question 12

Differentiation of male and female nematodes

Answer 12

Male posterior end is curved or coiled ventrally

Question 13

Where can we find the anus of the nematodes

Answer 13

Posteriorly subterminal

Question 14

Body cavity of nematodes have high what?

Answer 14

Hydrostatic pressure

Question 15

Body systems that are rudimentary (simple, underdeveloped, not complex ) in nematodes

Answer 15

Excretory and nervous systems

Question 16

Absent body systems in nematodes

Answer 16

Circulatory system