$A$: The higher organisms must evolve a special mechanism for gamete transfer.
$R$: Male and female gametes are formed in different individuals.

After culturing the anther of a plant,a few diploid plants were found along with haploid plants. The diploid plants could have arisen from

In which of the following organisms does the formation of the zygote $NOT$ occur inside the body?

The condition in which male and female reproductive parts are present on different plants is called:

Match the following columns:

List-$I$	List-$II$
$(a)$ Stamen	$(i)$ Microsporangium
$(b)$ Pistil	$(ii)$ Microsporophyll
$(c)$ Anther	$(iii)$ Megasporangium
$(d)$ Ovule	$(iv)$ Megasporophyll

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.