Nitsch was able to obtain strawberries of curious shapes by:

Explain why meiosis and gametogenesis are always interlinked?

Choose the correct option for the given statements:
$(i)$ In western countries, a large number of pollen products in the form of syrups are available in the market.
$(ii)$ In rice, pollen grains lose viability within $30$ minutes of their release.
$(iii)$ Pollen grains are stored at $-196^{\circ}C$ (cryopreservation) in liquid nitrogen, not at room temperature, for future use.
$(iv)$ Pollen grains are released from the anther, not from the seeds of wheat and rice.

Dioecious plant $- P$
Monoecious plant $- Q$
Select the correct option for $P$ and $Q$.
$\quad\quad\quad P\quad\quad Q$

Choose the correct option with respect to the type of division during gamete formation and the type of division in the zygote for organisms having a haplontic life cycle,respectively.

Examine the figures $(A-D)$ given below and select the right option out of $(A-D)$,in which all the four structures $A, B, C$ and $D$ are identified correctly.