Question

Which of the following assists in the locomotion of the organism stated?
A. Epithelium of pheretima
B. Trichocysts of paramecium
C. Pedicellariae of Starfish
D. Posterior sucker of Hirudinaria

Answer 1

Hint: The parasites are basic in the tem­perate parts of the world. The regular steers siphon is found in India, Burma, Ceylon. It is found in lakes, trench, lakes and sluggish streams. It is a sanguivorous parasite, (benefits from the blood of steers). H. granulosa, H. manillensis, H.javanica, H. viridis are various species met with the sort. The siphon body comprises different sorts of parasitic variations for sucking blood from their hosts.

Complete answer:
> Colouration: The body of the parasite is brilliantly shaded. The dorsal surface is olive-green; the ventral surface is orange-yellow in shading. Particular stripes are seen on the body.

> Segmentation of the body: The body is separated into 33 sections. Remotely it is partitioned into more fragments which are called annuli. There are 109 annuli in a parasite. The quantity of annuli changes in various fragments. A normal section of the center portion of the body incorporates five annuli.

> Suckers: Body bears 2 suckers. The front sucker or oral sucker is oval and ventrally-coordinated, shaped by the initial 3 fragments, it incorporates the mouth. At the back finish of the body a round and profoundly solid back or butt-centric sucker is shaped by a combination of seven body fragments, implied for connection and Locomotion.

So, the correct answer is "option D".

Note: The body is separated into 33 fragments. Remotely it is partitioned into more sections which are called annuli. There are 109 annuli in a parasite. The quantity of annuli shifts in various portions. A commonplace fragment of the centerpiece of the body incorporates five annuli.