Identify the organism given below.

Match the following columns:

Column-$I$ (Class)	Column-$II$ (Origin of asexual spores)
$P$. Phycomycetes	$I$. Spores are produced exogenously.
$Q$. Basidiomycetes	$II$. Absent
$R$. Ascomycetes	$III$. Spores are produced endogenously.

In $Yeast$,sexual reproduction occurs by conjugation. After fusion,the zygotic nucleus divides meiotically to form haploid spores. The unicellular structure containing these haploid spores is known as:

Which of the following is incorrect for Phycomycetes?

What is the botanical name of the species that causes white rust of crucifers?

Which one of the following combinations of characters is correct for the given fungal group?