The Triploblastic, Acoelomate Body Plan - Flat Worms

Chapter 10: The Triploblastic, Acoelomate Body Plan

Platyhelminthes (Flat worms)

Multiple Choice

The flat worms were the first animals to do which of the following?

• eat

• hunt

• move

Multiple Choice

Flat worms are the first animals to have which of the following?

• nerves

• a head and brain

• a digestive system

• a skeletal system

Multiple Choice

Where is the mouth of a flatworm located?

• on it head

• on the underside of its body

• on the top side of its body

• they do not have one

Multiple Choice

What term is used to describe the sexual activity of flatworms?

• they do not mate sexually

• sexual intercourse

• penis fencing

Multiple Choice

The structure that detects light in the planarian flatworm is the

• pharynx

• flame cells

• Eyespots

Multiple Choice

True or False: Platyhelminthes are acoelomate

• True

• False

Multiple Choice

What type of symmetry do all worms have?

• bilateral

• radial

• asymmetry

• no symettry

Multiple Choice

The term triploblastic mean 3 tissue layers. From outer most to inner most what are the 3 tissue layers in triploblastic organization.

• endoderm, mesoderm, ectoderm

• ectoderm, endoderm, mesoderm

• mesoderm, endoderm, ectoderm

• ectoderm, mesoderm, endoderm

Multiple Choice

What does the term hermaphrodite mean?

• have only male sex organs

• having only female sex organs

• having both male and female sex organs

Multiple Choice

What type of fertilization do flatworms use for sexual reproduction?

• internal

• external

Multiple Choice

Major characteristics of Phylum Platyhelminthes.

• Asymmetrical, diploblastic, pseudocoelomate, lack cephalization

• Bilateral symmetry, triploblastic, acoelomate, cephalization

• Radial symmetry, monblastic, acoelomate, cephalization

• Bilateral symmetry, triploblastic, coelomate, cephalization

Multiple Choice

What type of symmetry do flatworms have?

• radial
• bilateral
• no symmetry
• cephalization

Multiple Choice

How do flatworms "breath" (exchange gases with their environment)?

• using lungs

• using gills

• by diffusion through the skin

Multiple Select

What are protonephridia?

• basic kidney like structures for osmoregulation

• kidneys like the ones found in humans

• flame cells

• stomach cells

Multiple Choice

How do planarians reproduce asexually?

• laying eggs
• they don't reproduce asexually
• regeneration of missing parts
• planarians fertilize their own eggs

Multiple Choice

Planaria are members of class

• Platyhelminthes
• Cestoidea
• Turbellaria
• Trematoda

Multiple Choice

Class Tubellaria are the only flat worms that are...

• parasitic

• freeliving

• flat

• round

Multiple Choice

Class Trematoda are flat worms that are..

• freeliving

• parasitic

Multiple Choice

The primary host of a parasitic flatworm is where

• the adults feeds and reproduces

• the larval form lives and feeds

• the larval form turns into the adult form

Multiple Choice

The intermediate host of a parasitic flatworm is where

• the adults feeds and reproduces

• the larval form lives and feeds

• the larval form turns into the adult form

Multiple Choice

What is the primary host of the schistosoma blood fluke?

• Human

• Cat

• Snail

• Bat

Multiple Choice

What is the intermediate host of the Schistosoma blood fluke?

• Human

• Cat

• Snail

• Bat

Multiple Choice

Where are you most likely to be infested by Schistosoma (the flat worms that cause swimmer itch.)

• in your bathtub

• in a swimming pool

• in a pond or river

• in the ocean

Multiple Choice

What is the function of the scolex of a tapeworm?

• To attach to the intestinal wall of the host 
• To reproduce
• To get rid of waste
• To carry the eggs

Multiple Choice

This proglottid has both male and female sex organs. They are found in which class of worms?

• Cestoda
• Trematoda
• Turbellaria
• Monogenea

Multiple Choice

Which of these is a common way that parasitic worms can be transmitted?

• enter thru skin

• undercooked meat

• consuming contaminated food or water

• all of these are ways you can get worms!

Multiple Choice

What class?

• Class Cestoda

• Class Trematoda

• Class Turbellaria

• Class Monogenea

Multiple Choice

What phylum do flatworms belong too?

• Annelida

• Platyhelminthes

• Nematoda