Question

Identify the common symptoms associated with necrosis in plants:
A. Wilting
B. Blight
C. Leaf spot
D. Cottony growth
E. Embryo Abortion
Choose the correct answer from the options given below:

• A. B, C, D
• B. A, D, E
• C. A, B, C
• D. C, D, E

Hint:

Necrotic Plant Symptoms (Death of tissue): Leaf spots, Blights, Wilts, Cankers, Rot, Damping off. Fungal mycelium/growth is a Sign, not a symptom.

Answer 1

The Correct Option is C

Step 1: Understanding the Concept:
Plant pathology categorizes disease symptoms into necrotic (tissue death), hyperplastic (overgrowth), and hypoplastic (underdevelopment) syndromes.

Step 2: Detailed Explanation:
Necrosis refers to the death and browning of plant cells, tissues, or entire organs caused by fungal, bacterial, or physiological damage:
- Wilting (A): Vascular collapse and death of shoot turgor due to xylem blockage/necrosis.
- Blight (B): Rapid, extensive discoloration, burning, and death of leaves, flowers, or twigs.
- Leaf Spot (C): Discrete, localized necrotic lesions on foliage.
(Cottony growth is a fungal sign, and embryo abortion is reproductive failure).
Thus, symptoms A, B, and C are direct manifestations of necrosis.

Step 3: Final Answer:
Hence, the correct answer is A, B, C, corresponding to option (C).