Multiple choice

Amongst plant viruses, the viruses show various shapes. The shape of maize streak virus is

  1. isometric

  2. rod-shaped

  3. filamentous

  4. geminate

  5. bacilliform
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Geminate viruses are twinned isometric particles about 30 x 18 nm. These particles are diagnostic for viruses in the family Geminiviridae which are widespread in many crops especially in tropical regions. The example includes Maize streak virus, genus Mastrevirus.

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