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