Biology Quiz

Chapter 10: The Triploblastic, Acoelomate Body Plan

1) Which of the following is not an acoelomate?

a) Platyhelminthes c) Gastrotrichia

b) Rotifera d) Turbellaria

2) Three important characteristics first appeared in the acoelomates. Which of the following is not one of them?

a) bilateral symmetry c) an excretory system

b) a true mesoderm d) nervous tissues

3) Acoelomates lack a body cavity because the __________ cells completely fills the area between the outer epidermis and digestive tract.

a) parenchymal c) nervous

b) muscular d) ectodermal

4) Which of the following classes is typically not parasitic?

a) Turbellaria c) Trematoda

b) Monogenea d) Cestoidea

5) …show more content…
a) True b) False

21) A fluid-filled bladder worm larva of a pork tapeworm is called a cysticercus, and it may form bladders in the brain of the mammalian host.

a) True b) False

22) The most distinctive feature of nemerteans is a long proboscis held in a sheath called a rhynchocoel.

a) True b) False

23) Nemerteans are microscopic, aquatic animals with a complete digestive tract and an unusual proboscis.

a) True b) False

24) Animals in the phyla Acoelomorpha are small flat worms less than 5 mm in length.

a) True b) False

25) Animals in the phyla Platyhelminthes have diploblastic tissue organization.

a) True b) False

26) The monogenetic flukes (class Monogenea) are mostly external parasites of fishes.

a) True b) False

27) Turbellarians are monoecious with reproductive systems adapted for internal fertilization.

a) True b) False

28) Most turbellarians move entirely by cilia and are predators and scavengers.

a) True b)