Looking for classes? Ksquare Career Institute, Bengaluru →
Which one of the following is wrongly matched?
A
$Cassia$ – Imbricate aestivation
B
Root pressure – Guttation
C
$Puccinia$ – Smut
D
Root – Exarch protoxylem
Detailed Solution
$Puccinia$ is the rust fungus (it causes rust of wheat); the smut fungus is $Ustilago$. Both are basidiomycetes, but the pair $Puccinia$ – smut is wrong.
$Cassia$ and gulmohur show imbricate aestivation of the corolla, so that pair is correct.
Guttation, the loss of water as droplets from the tips of leaves through hydathodes, is caused by root pressure, so that pair is correct.
In roots the protoxylem lies towards the periphery and the metaxylem towards the centre, i.e., the xylem is exarch, so that pair is correct.
Hence the wrongly matched pair is $Puccinia$ – smut.
$Cassia$ and gulmohur show imbricate aestivation of the corolla, so that pair is correct.
Guttation, the loss of water as droplets from the tips of leaves through hydathodes, is caused by root pressure, so that pair is correct.
In roots the protoxylem lies towards the periphery and the metaxylem towards the centre, i.e., the xylem is exarch, so that pair is correct.
Hence the wrongly matched pair is $Puccinia$ – smut.