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UPSC 2018: Consider the following: 1. Birds 2. Dust blowing 3. Rain 4. Wind blowing Which of the above spread plant diseases?
(a)1 and 3 only
(b)3 and 4 only
(c)1, 2 and 4 only
(d)1, 2, 3 and 4
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Not attemptedCorrect Answer: (d) 1, 2, 3 and 4
Plant pathogens can be spread directly or indirectly by numerous agents: birds (carry spores on bodies), wind and dust (air-borne dispersal), and rain-splash dispersal are all well-documented. Hence all four listed agents—birds, dust blowing, rain and wind—can transmit plant diseases ([civilsdaily.com](https://www.civilsdaily.com/answer-key-for-upsc-prelims-2018/))
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Frequently Asked Questions
What is the correct answer to this UPSC 2018 Environment & Ecology question?▼
The correct answer is option (d): 1, 2, 3 and 4. Watch the detailed video explanation in our Sherlocking Prelims course on UnlockIAS.
Which year was this Sustainable Agriculture & Forestry question asked in UPSC Prelims?▼
This question was asked in UPSC CSE Prelims 2018, GS Paper 1, as Question 99. It falls under Environment & Ecology > Sustainable Agriculture & Forestry.
What is the difficulty level of this UPSC question?▼
This question is rated "easy". It tests basic recall and most well-prepared aspirants should answer it correctly.
How many UPSC Prelims questions have been asked from Sustainable Agriculture & Forestry?▼
UPSC has asked 31 questions from Sustainable Agriculture & Forestry (under Environment & Ecology) across multiple years. Visit the topic page to see the full list and year-wise trends.