(B) The potato leaf-roll disease is a viral disease caused by the Potato leaf-roll virus $(PLRV)$.It is transmitted primarily by aphids,such as $Myzus

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(B) The potato leaf-roll disease is a viral disease caused by the Potato leaf-roll virus $(PLRV)$.It is transmitted primarily by aphids,such as $Myzus$ $persicae$.The virus infects the phloem tissue of the plant,leading to the characteristic rolling of leaves and stunted growth.

Class 11 Biology Biological Classification Viruses, Viroids, Prions and Lichens

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Potato leaf-roll disease is caused by

A
Mycoplasma
B
Virus
C
Microspores
D
Bacterium

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Class 11

Biology Questions

Chapter

Biological Classification

Subtopic

Viruses, Viroids, Prions and Lichens

$M_{12}$ phage is

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Select the incorrect statement.

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Match the following columns:

Column-$I$ Column-$II$

$1$. Ivanowsky $p$. Discovered viroids.

$2$. Tulasne $q$. Studied algae.

$3$. Diener $r$. Coined the term virus.

$4$. Beijerinck $s$. First to discover lichen.

$t$. Studied mycology.

$u$. First to discover $TMV$.

Column-$I$	Column-$II$
$1$. Ivanowsky	$p$. Discovered viroids.
$2$. Tulasne	$q$. Studied algae.
$3$. Diener	$r$. Coined the term virus.
$4$. Beijerinck	$s$. First to discover lichen.
	$t$. Studied mycology.
	$u$. First to discover $TMV$.