Parasite introduction (3)

Question 1

what are the two types of helminths?

Answer 1

nematodes (roundworms)
platyhelminths (cestodes and flukes)

Question 2

what are nematodes also called?

Answer 2

roundworms

Question 3

what are platyhelminths also called?

Answer 3

flatworms - cestodes and flukes

Question 4

what are protozoa?

Answer 4

single celled organisms

Question 5

what are the two types of arthropods?

Answer 5

arachnids
insects

Question 6

are all nematodes parasitic?

Answer 6

no - both free living and parasitic species

Question 7

what is the very outer surface of a nematode called?

Answer 7

cuticle

Question 8

what are the three layers of a nematodes body wall?

Answer 8

muscle cells (inside)
hypodermic
cuticle (outer)

Question 9

what is the function of a nematodes cuticle?

Answer 9

maintain the structure of the worm

Question 10

what is parts of the nematodes digestive tract?

Answer 10

mouth
buccal cavity
oesophagus
intestine
anus

Question 11

what are some possible external decorations that can be seen on the cuticle of nematodes?

Answer 11

cervical papillae
spicules
bursa (males)
vulva flap

Question 12

how to the size of male and female nematodes compare?

Answer 12

females usually larger (need to hold eggs)

Question 13

what word would be used to describe the lifecycle of trematodes?

Answer 13

indirect

Question 14

what are trematodes also called?

Answer 14

fluke

Question 15

what are cestodes also called?

Answer 15

tapeworm

Question 16

how does the sexual reproduction of nematodes and trematodes vary?

Answer 16

trematodes are hermaphrodites where as nematodes exists as two different sexes

Question 17

what is the outer layer of a trematode called?

Answer 17

tegument

Question 18

are tapeworms parasitic?

Answer 18

yes they are always parasitic

Question 19

what is the name of the stage of the tapeworm in the intermediate host?

Answer 19

metacestode

Question 20

what is the name of the outer layer of tapeworm?

Answer 20

tegument

Question 21

what kind of lifecycle do tapeworms have?

Answer 21

indirect

Question 22

what are the important protozoa of veterinary importance?

Answer 22

Babesia
Toxoplasma
Giardia
Trypanosomiasis
Leishmaniasis

Question 23

what structures make up a protozoa?

Answer 23

nucleus, cytoplasm, endoplasmic reticulum, Golgi apparatus, mitochondria, lysosomes

Question 24

how do protozoa reproduce?

Answer 24

sexually and asexually (binary fission, schizogony)

Question 25

how can protozoa divide asexually?

Answer 25

binary fission
schizogony

Question 26

what is the feeding stage of protozoa known as?

Answer 26

trophozoite