Diseases caused by fungi are:
A. Tobacco mosaic
B. Brown rust of wheat
C. Black rot of crucifers
D. Red rot of sugarcane
E. Late blight of potato
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → B, D and E only
A. Tobacco mosaic — False. Caused by a virus.
B. Brown rust of wheat — True.
C. Black rot of crucifers — False. Caused by a bacterium.
D. Red rot of sugarcane — True.
E. Late blight of potato — True.
Note: This question is from Chapter 9, Strategies for Enhancement in Food Production, of the pre-rationalised NCERT book. This chapter is not in the present NCERT book (2026-27). The extract below is from the pre-rationalised edition.
NCERT Extract (Pre-rationalised edition, Chapter 9, Strategies for Enhancement in Food Production):
Plant Breeding for Disease Resistance – “… Before breeding is undertaken, it is important to know about the causative organism and the mode of transmission. Some of the diseases caused by fungi are rusts, e.g., brown rust of wheat, red rot of sugarcane and late blight of potato; by bacteria – black rot of crucifers; and by viruses – tobacco mosaic, turnip mosaic, etc.”