Which of the following is incorrect with respect to angiosperms?

Which of the following flowers only once in its life-time?

In the context of the life cycle of angiosperms, which of the following is the correctly ordered sequence?

Read the following statements regarding gynoecium in angiosperms.
$i$. Embryo sac is located towards the micropylar end of the ovule.
$ii$. Placenta is present inside the ovary locules.
$iii$. Stigma serves as the receptive organ for pollen grains.
$iv$. Cells of the nucellus are haploid with abundant food.
$v$. Ovules generally have more haploid cells than diploid cells.
Identify the correct set of statements from the following.

Even in the absence of pollinators,assured seed set will be there in

Which plant has the longest pollen tube?