Assertion : Griseofulvin extracted from P.griseofulvum is used for ringworm treatment.
Reason : Trichopyton, Epidermophyton, etc., cannot grow well in presence of Penicillium griseofulvum.

Options

A. If both assertion and reason are true and reason is the correct explanation of assertion
B. If both assertion and reason are true but reason is not the correct explanation of assertion
C. If assertion is true but reason is false
D. If both assertion and reason are false

Answer

A

Explanation

Antibiotics are chemical substances produced by some microbes which, in small concentration, can kill or retard the growth of harmful microbes without adversely affecting the host. Griseofulvin is an antibiotic produced by Penicillum griseofulvum and is antifungal in nature, especially effective aganist ringworm. Ringworm is caused by dermatophyti fungi like Epidermophyton, Trichopyton, Microsporium which cannot grow in presence of P.griseofulvum because of the antagonistic effect of antibiotic griseofulvin secreted by the Penicillum sp.