ZOOLOGY-Round worms&Flat worms?

MULTIPLE CHOICE. Circle the correct response for each question. THERE MAY BE MORE THAN ONE CORRECT ANSWER.

What is the term for groups of nerve cells in the head region of a flatworm?

A. Ganglia

B. Mantles

C. Seta

D. Visceral mass

Which of the following is the reproductive process in which an organism splits in two and each half grows new parts to become a complete individual?

A. Larva

B. Fission

C. Scolex

D. Hermaphroditism

Which of the following has a pharynx, flame cells, and eyespots?

A. Flatworm

B. Roundworm

C. Ascaris

D.Rotifer

Which worm lives in soil and burrows into a person's feet?

A. Hookworms

B. Pinworms

C. Trichina worms

D. Filaria worms

Which worm is a pseudocoelomate?

A. Nematodes

B. roundworms

C. Planarians

What worm lays eggs on the skin around the anus that can be transmitted by the hands to other objects and then be ingested?

A. Hookworm

B. Ascaris

C. Trichina worm

D. Pinworms

The worm with cilia surrounding the mouth to sweep food into the digestive tract is the _________.

A. Fluke

B. Monogenean

C. Planarian

D. Rotifer

Method of reproduction in which females develop from unfertilized eggs.

A. Hermaphroditism

B. fission

C. Parthenogenesis

A muscular organ in rotifers that breaks food into smaller pieces is the __________.

A. Pharynx

B. gizzard

C. Mastax

D. Scolex

A free-living, pseudocoelomate worm found in freshwater is the __________.

A. Planarian

B. Fluke

C. Tapeworm

D. Rotifer

* * * * * * * * * * * * * * *

Number the following steps in the schistosome life cycle in the correct sequence beginning with the first step after sexual reproduction.

__________ Tailed larva swim through the water

__________ Ciliated larva swims through the water

__________ Larvae penetrate the skin of humans

__________ Larvae reproduce asexually in the intermediate host

__________ Larvae burrow into snail

__________ Larvae enter a blood vessel and develop into adults

__________ Fertilized eggs leave the primary host in the feces or urine

* * * * * * * * * * * * * * *

NAME THE ORGANISM BELOW AND NAME AND DESCRIBE THE PROCESS THAT IS OCCURRING.

Is this sexual or asexual reproduction for this flatworm? SEXUAL or ASEXUAL

Can this planarian reproduce sexually? YES or NO

Planarians are _H_ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ because they can produce eggs & sperm.

Do they fertilize their own eggs or exchange sperm? SELF FERTILIZE or CROSS FERTILIZE

LABEL THE PLANARIAN USING THE FOLLOWING PARTS --- brain, eyespots, nerve cord, mouth, intestine, and pharynx.

Label the following parts of the rotifer --- cilia, mouth, anus, cloaca, stomach, eyespots, flame cells, and mastax. Match the parts to their functions.

__________ appears as a rotating wheel to sweep in food

__________ opening where food enters

__________ opening where wastes leave

__________ collecting chamber for wastes and reproductive cells

__________ breaks food into smaller pieces so it can be digested more easily

__________ light sensitive areas

__________ where digestion occurs

__________ collect excess water and wastes from the body