The second largest association after the common symptoms

 The second largest association after the common symptoms of triploblastic mollusca arthrop

 

The system life-cycle includes two hosts, sheep as the definitive host and Limnia as the intermediate host.  Life-cycle stages include zygote, miracidium larva, sporocyst larva, radia larva, cercariae larva and encysted metacercariae. After ingestion by sheep, the metacercariae turn into adult parasites inside the host.  Liver fluke causes anemia, eosinophilia, diarrhea, dysentery, ulcers, pain, bottle-jaw disease, and liver decompensation in sheep.  Wool, leather and meat yields are greatly reduced in infected sheep, causing great damage to the animal products industry.  It also causes metabolic disturbances in the host.  Class III: Cestoda (gr., cestos = girdle + eidos = form) exclusively endoparasites.  Cuticle covered body.  Commonly called tape worms, body ribbons or tapes.

 Intestine completely absent.  Body segmented and divided into scolex, neck and segments: eg.  Tapeworm Example : Tapeworm / Taenia Sucker Mouth Scolex Neck Vadial Muscles Immature Segment Neck Young Proglottids Sucker Mature Segment or Proglottids Rostelum strobilla Double yo gravid proglottids of hook A longitudinal excitatory anal transverse excretory canal.

 Zoology It feeds on insects.  There are about fifteen pairs of walking legs.  Each foot is not jointed, but is surrounded by ridges containing tubercles and ends in a foot, which has two curved claws and three distinct tubercles.  A tracheal system for respiration.  Excretory nephridia.  gender different.  Mostly lively, but some may show ellipticity.

 The peripatus is considered the connecting link between Annelida and Arthropoda.  Example: Dragon Fly Compound Head Filiform Eye Pterostigmata Antenna Forewing First Leg Second Leg Third Leg Hind Wing Intercalated Veins Thorax Abdominal Segment -Copulatory Organ Fig.  Dragon fly Dragon flies leave stalks of grass resting on twigs during the rainy season.  The dragger fly is a beautiful insect, famous for its beauty and brightness of colours.

 The body is divided into head, thorax and abdomen.  The head is exceptionally mobile and is attached to an extra slender.  The head consists of large compound eyes, biting filiform antennae and chewing mouth parts.  The thorax is vaguely divided into the lesser prothorax and the I mesothorax and the metathorax.  Thoracic legs 3 pairs, named foreleg, mid leg and hind leg.  The fins are large, membranous, and roughly the same size.  In the last segment of the abdomen there is a pair of caudal copulatory organs.  The transformation is incomplete.  1.9 Phylum: Motusca 'Mollusca' is derived from the Latin word mollis or molluscs which means soft body.  For the first time, molluscs have received harsh SA for protection.

 Mollusca are the second largest phylum after common traits of arthropods, mostly marine, freshwater or terrestrial.  Tissue system grade of body organization.  triploblastic, coelomatic monoplacophora) and bilaterally symmetric.  The body is divided into head, mantle, legs and visceral mass.  The shell when present, usually unilateral or bivalve, is unbroken (except for an exoskeleton internal in some. The coelom reduced by the hemocoel. The true coelom is limited to a few organs. The digestive tract is complete. The gills or lungs or  Respiration by both.