Class TREMATODA(FLUKES)

Question 1

Subclasses/orders of Class Trematoda

Answer 1

• Monogenea
• Digenea
• Aspidogastrea

Question 2

Parasites in the skin and gill of fish, amphibians, and reptiles; with direct life cycle

Answer 2

Monogenea

Question 3

Of veterinary importance; parasites of domestic animals; requires an intermediate host.

Answer 3

Digenea

Question 4

Parasites of fish, turtles, snails and crabs; with direct life cycle

Answer 4

Aspidogastrea

Question 5

General characteristics of class trematoda

Answer 5

• Body dorsoventrally flat
• Cuticle may be smooth or spiny
• Organs are embedded in the parenchyma
• Suckers for attachment are present
• Present alimentary alimentary anal which consists of mouth,pharynx,esophagus, and intestinal ceca; the anus is absent
• Excretory system consists of flame cells, excretory ducts, and excretory bladder
• Hermaphroditic except schistosomes ‘which are unisexual’
• Life cycle may be direct or indirect

Question 6

General characteristics of Digenetic Treamtodes

Answer 6

• occurs primarily in the bile duct, alimentary tract and vascular system
• flattened dorsoventrally; unsegmented
• with blind alimentary tract
• without a body cavity
• generally hermaphroditic
• possess suckers for attachment
• mollusks are essential cor development; some requires a second intermediate host
• ## larval forms(sporocysts and rediae) are capable of asexual multiplication(paedogenesis or parthenogenesis)