Question

Which of the following statements about extent of infection and perpetuation of pathogen are correct?

(A) Disease which is confined to a particular part or organ is known as systemic disease

(B) Arhar wilt is a soil-bome disease

(C) Smut disease of cereals are seed-bome

(D) Mildew and rusts are air-bome.

Choose the correct answer from the options given below.

A (A), (C) and (D) only. Correct Answer Incorrect Answer
B (B) and (D) only. Correct Answer Incorrect Answer
C (A), (B) and (D) only. Correct Answer Incorrect Answer
D (B), (C) and (D) only. Correct Answer Incorrect Answer

Solution

(B) Arhar wilt is a soil-borne disease: True, it primarily affects the plant through soil. (C) Smut disease of cereals are seed-borne: True, smut spores can contaminate seeds and transmit the disease. (D) Mildew and rusts are air-borne: True, spores of these diseases are typically spread through the air.

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