Animal Kingdom Question 107
Question: Assertion : Hydatid vesicle is the characteristic of Echinococcus. Reason : Hydatid cyst can remain for several years within human body.
Options:
A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C) If the assertion is true but the reason is false
D) If both the assertion and reason are true
Show Answer
Answer:
Correct Answer: B
Solution:
The hydatid cyst of Echinococcus is the most harmful stage.
In the lung, and in a few cases in the brain, heart, bone, kidney etc., the larva develops into a watery bladder or hydatid vesicle or hydatid cyst, having a two layered cyst wall.
The cyst produces, by asexual budding, exogenous and endogenous buds that contain brood chambers.
A hydatid cyst may grow upto football size in 12 to 20 years in man, necessiating surgery.
Large hydatid cysts cause inflammation, diarrhoea, abdominal pains, vomiting, eosinophilia etc.
Presence of cysts in brain, eye or kidney may prove fatal.
BETA
