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Worms - Platyhelminthes and Nematoda

Total questions: 26

Worksheet time: 33mins

Name
Class
Date
1.

What structures do tapeworms have for attaching themselves to the intestinal lining of their host? (multiple answers possible)

a)

suckers

b)

pharynx

c)

hooks

d)

silk glands

2.

Which structure is used by a planarian for feeding?

a)

cilia

b)

scolex

c)

sucker disc

d)

pharynx

3.

This type of flatworm (pictured) is free-living in freshwater and marine environments.

a)

sheep liver fluke

b)

planarian

c)

hookworm

d)

tapeworm

4.

How does a tapeworm get its nutrition?

a)

Through its mouth and complex digestive system.

b)

Absorbs food in the host's intestine directly through its skin.

5.

What type of symmetry do all worms have?

a)

bilateral

b)

radial

c)

asymmetry

d)

spherical

6.

The image shows which type of worm?

a)

fluke

b)

flatworm

c)

roundworm

d)

segmented worm

7.

Which of the following are true of worms in Phylum Nematoda? (multiple answers possible)

a)

they are very flat

b)

they have a two-way, incomplete digestive system

c)

they are hermaphrodites

d)

they move with thrashing, snake-like movements

8.

A single organism that has both testes and ovaries is called _____________________ .

a)

hermaphroditic

b)

dioecious

c)

heterotrophic

d)

homozygous

9.

The extendable throat of a planarian is the _____________ .

a)

intestine

b)

acetabulum

c)

pharynx

d)

gizzard

10.

To which phylum does a planarian belong?

a)

Cnidaria

b)

Platyhelminthes

c)

Nematoda

d)

Annelida

11.

Which of the following are true of worms? (multiple answers possible)

a)

they are unicellular

b)

they are vertebrates

c)

they have long, narrow bodies

d)

they have bilateral symmetry

12.

An organism in which the sexes are separate (i.e. different male and females organisms) is _________________ .

a)

autotrophic

b)

dioecious

c)

hermaphroditic

d)

invertebrate

13.

Which worm phylum includes planarians, tapeworms, and flukes?

a)

Platyhelminthes

b)

Nematoda

c)

Onychophora

d)

Annelida

14.

Which worm is pictured?

a)

dog tapeworm

b)

planarian

c)

earthworm

d)

Chinese liver fluke

15.

Which name best describes an organism that lives in or on another and feeds from that organism's tissues or fluids?

a)

decomposer

b)

host

c)

parasite

d)

scavenger

16.

The two eyespots of a planarian are _________________ .

a)

posterior

b)

ventral

c)

anterior

d)

lateral

17.

Which of the following are true of this marine flatworm? (multiple answers possible)

a)

It belongs to Phylum Platyhelminthes

b)

It has a complete, one-way digestive tract

c)

It has male and female reproductive organs

d)

It has a round body with pointed ends

18.

Planarian flatworms can reproduce by pulling themselves apart followed by ___________ .

a)

binary fission

b)

budding

c)

forming gametes

d)

regeneration

19.

The nerve cords of a planarian run along the belly and are therefore __________ .

a)

unilateral

b)

anterior

c)

ventral

d)

dorsal

20.

Who was first to observe microscopic nematodes from pond water in 1680?

a)

Gregor Mendel

b)

Matthias Schleidin

c)

Antoni van Leeuwenhoek

d)

Charles Darwin

21.

Worms have what level of biological organization?

a)

cells

b)

tissues

c)

organs

d)

organ systems

22.

Nematodes are said to be dioecious and therefore _______ .

a)

are active during the daytime

b)

reproduce asexually

c)

have separate male and female worms

d)

live within a host organism

23.

Some soil nematodes feed on bacteria, yeasts, and algae. They are therefore ____________ .

a)

free-living

b)

parasitic

c)

mutualistic

d)

hermaphroditic

24.

The pictured worms belong to Phylum __________ .

a)

Nemertea

b)

Nematoda

c)

Platyhelminthes

d)

Annelida

25.

The pictured worm belongs to Phylum ____________ .

a)

Platyhelminthes

b)

Nematoda

c)

Annelida

d)

Sipuncula

26.

The frightening looking suckers and hooks on the heads of tapeworms make them effective _________ .

a)

herbivores

b)

parasites

c)

pollinators

d)

decomposers