Porifera, Cnidaria, & Platyhelminthes Practice Questions

Part I. Label the diagrams shown below. Choose from the following labels:

mouth tentacle endoderm ectoderm

bud GVC basal disc

eyespot GVC mouth pharynx

cilia flame cells brain auricle

nerve cords

Part II. Life Cycle. Label the life cycle diagram below. Choose from the following labels:

sperm new sponge develops egg

larva dividing cells (spongocoel) larva released

flagella

Part III. Fill in the blank. Fill in the missing structure/process for each statement below.

1.  In a jellyfish, food enters the body and wastes are removed from the body through the ______.

2.  In sponges, waste water is removed through the ______.

3.  In a jellyfish and all flatworms, the process of diffusion is used for these two life processes: ______and ______

4.  In a sponge, the ______transport nutrients and make egg and sperm cells.

5.  Spicules provide ______for the sponge.

6.  Water is drawn into the sponge by the beating of the ______, which are attached to the collar cells.

7.  Sponges are not capable of ______since they have no nerve cells.

8.  Hydra have a nervous system made up of a loosely connected band of nerve cells called a ______.

9.  In a hydra, the ______sting and immobilize the prey, then the ______grab the prey and stuff it into the mouth.

10.  In a sponge, the ______trap the food particles, while the ______digest the food particles.

11.  All three phyla of animals are capable of ______, a process in which the animal regrows missing parts.

12.  Budding is a type of ______reproduction because it involves only one parent.

13.  In harsh conditions, sponges produce internal buds which can break off and grow into adult sponges when the conditions improve. This process is called ______.

14.  The planaria will move by secreting ______and pushing through it with its ______.

15.  Planaria and flukes feed with a tube called a ______that shoots from its mouth and brings food into the body.

16.  In planaria, flukes, and jellyfish, food is digested inside a hollow tube in the body called a ______. Enzymes made in the inside cell layer called the ______digest their food.

17.  In all flatworms, tubes called ______filter and remove waste.

18. A ______feeds on the digested food of its host organism.

19.  Flukes and tapeworms are considered to be ______because they live inside of a host organism and cause harm to them.

20.  A ______feeds on the blood and tissues of its host organism.

21.  A planaria is capable of detecting light through its ______.

22.  A planaria is capable of learning to go through mazes because of their ______.

23.  Both a tapeworm and a fluke infection can be detected by examining the ______for the presence of the eggs.

24.  How a fluke and a tapeworm infection can be treated with ______.

Part IV. Short answer.

25.  How do all three groups of animals compare in terms of the type of symmetry seen?

26.  How do Porifera, Cnidaria, and planaria compare in terms of their diet?

27.  How do Porifera, Cnidaria, and free-living flatworms compare in terms of their habitat?

28.  How do all three groups of animals compare in terms of their gender?

29.  How do the medusa and polyp body forms seen in the Phylum Cnidaria compare?

30.  How can someone become infected with a tapeworm? What would be some symptoms of infection?

31.  How can a person become infected with a fluke? What would be some signs of infection?

33. How can you prevent becoming infected with a tapeworm or a fluke?