After anther culture,some diploid plants are observed along with haploid plants. Which of the following parts induces the origin of the diploid plants?

Match column $I$ with column $II$ and select the correct option using the codes given below.

Column-$I$	Column-$II$
$(A)$ Pistils fused together	$(i)$ Gametogenesis
$(B)$ Formation of gametes	$(ii)$ Pistillate
$(C)$ Hyphae of higher Ascomycetes	$(iii)$ Syncarpous
$(D)$ Unisexual female flower	$(iv)$ Dikaryotic

Which of the following statements is correct?

The vital link that ensures continuity of species between organisms of one generation and the next is represented by all of the following,except:

Pollen allergy is caused by pollens of

Select the correct option from the following statements regarding pollen grains:
$I -$ Pollen grains are rich in nutrients.
$II -$ In recent years,pollen tablets have been used as food supplements.
$III -$ In western countries,a large number of pollen products are available in the market in the form of tablets and syrups.
$IV -$ Pollen consumption has been claimed to increase the performance of athletes and racehorses.
$V -$ Pollen grains can germinate on the stigma after losing their viability.