Question

    Black spot disease in roses is caused by

    _____
    A Botrytis Correct Answer Incorrect Answer
    B Diplocarpon Correct Answer Incorrect Answer
    C Alternaria Correct Answer Incorrect Answer
    D Fusarium Correct Answer Incorrect Answer

    Solution

    Black spot is the most serious disease of roses. It is caused by a fungus, Diplocarpon rosae, which infects the leaves and greatly reduces plant vigour.

    Practice Next