What was the contribution of the scientist $D$.$J$. Ivanowsky $(1892)$?

  • A
    He discovered the structure of bacteriophages.
  • B
    He recognized certain microbes as the causative organisms of the mosaic disease of tobacco.
  • C
    He demonstrated that viruses are crystalline in nature.
  • D
    He proposed the five-kingdom classification system.

Explore More

Similar Questions

Assertion $A$: Lichens are symbiotic associations between algal and fungal components. Reason $R$: The mycobiont components of fungi are heterotrophic. Which option is correct for Assertion $A$ and Reason $R$?

What is the protein coat of a virus known as?

How is a bacteriophage known?

Lichens reproduce asexually by which of the following methods?

Which of the following symptoms is $NOT$ seen in plants due to viruses?

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial
For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free
For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo