Question

Examples of seed-borne disease are
(A) Bacterial blight of rice (B) Stem or foot rot of papaya (C) Brown rot of potato (D) Black arm of cotton
Choose the correct answer from the options given below:

• A. (A), (B) and (C) only.
• B. (B), (C) and (D) only.
• C. (A), (C) and (D) only.
• D. (A), (B) and (D) only.

Hint:

Consider which of these diseases are transmitted through the seed itself versus the soil.

Answer 1

The Correct Option is C

Bacterial blight of rice and Black arm of cotton are both textbook examples of diseases that spread through infected seed, and Brown rot of potato is transmitted mainly through infected seed tubers, which counts as seed-borne transmission in this context.
Foot or stem rot of papaya works differently though, it is primarily a soil-borne disease caused by Phytophthora, spreading through contaminated soil and water rather than through seed.
So the seed-borne diseases here are (A), (C) and (D), matching option 3.