Animal Kingdom Question 181
Assertion : A parasitic disease elephantiasis can be identified with enormous growth in different body parts specially in limbs. Reason : Elephantiasis is caused by the excessive multiplication of filarial worms.
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 false
Show Answer
Answer:
Correct Answer: C
Solution:
Filarial worms (Brugia bancrofti) live in the lymphatic system of man, where they obstruct the flow of lymph, causing a condition known as elephantiasis.
In which the limbs, or other lymph glands and lymphatic vessels, grow to enormous size.
Due to lymphatic obstruction, lymph cannot get back into circulatory system, accumulates into organs and causes them to swell or enlarge to fantastic proportions (lymphodema).
In severe cases, abnormal connective tissue from the affected areas to further complicate the situation.
Excess secretion of growth hormone (secreted by anterior pituitary) leads to gigantism.
BETA
