Multiple choice

Apple scab is caused by

  1. Sclerotinia fruticola

  2. Uncinula necator

  3. Venturia inequalis

  4. Erysiphe polygoni
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

 Apple scab is caused by Venturia inequalis.The disease manifests as dull black or grey-brown lesions on the surface of tree leaves, buds or fruits.

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