Lab 4-Cestoidea

Question 1

Common name

Answer 1

tapeworm

Question 2

How many hosts in general per life cycle? (range)

Answer 2

2-3

Question 3

Where do adult tapeworms live?

Answer 3

Digestive tract of definitive host

Question 4

Are there any tapeworms that actively enter host?

Answer 4

No

Question 5

Life cycle stages of first sequence(x5)

development in water

Answer 5

egg –> coracidium –> procercoid –> plerocercoid –> adult

Question 6

What subclass is the fourth life cycle sequence restricted to?

Answer 6

Cestodaria

Question 7

What larval stage exists in the 4th sequence?

Answer 7

lycophore

Question 8

Unifying features of cestodes (x2)

Answer 8

• no gut

- solid body with parenchyma

Question 9

does it have tegument?

Answer 9

yes

Question 10

Are they hermaphroditic?

Answer 10

mostly yes

Question 11

Does it have proglottids?

Answer 11

yes

Question 12

Proglottids that overlap the one behind them?

Answer 12

craspedote

Question 13

Proglottids that butt up against one another?

Answer 13

craspedote

Question 14

Proglottids that detach from body to disperse eggs?

Answer 14

Apolytic

Question 15

Proglottids that remain attached from body to disperse eggs?

Answer 15

anapholytic

Question 16

Is oncosphere differentiated?

Answer 16

no