NEETBotanyBiological Classification
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Alternaria and Trichoderma are commonly known as imperfect fungi. Reason (R): Only the asexual or vegetative phases of these fungi are known. In the light of the above statements, choose the correct answer from the options given below:
Options
- ABoth (A) and (R) are true but (R) is not the correct explanation of (A)
- B(A) is true but (R) is false
- C(A) is false but (R) is true
- DBoth (A) and (R) are true and (R) is the correct explanation of (A)
Correct answer
D. Both (A) and (R) are true and (R) is the correct explanation of (A)
Step-by-step solution
Deuteromycetes are commonly known as imperfect fungi because only their asexual or vegetative phases are known. When the sexual forms of these fungi are discovered, they are often moved to Ascomycetes or Basidiomycetes. Alternaria and Trichoderma are classic examples of Deuteromycetes, making the Assertion (A) true. The Reason (R) correctly states the defining characteristic of this group (the absence of a known sexual phase), which is exactly why they are termed 'imperfect'. Thus, both (A) and (R) are true, and (R