Which part of the plant shows determinate growth?

Auxanometer is used to detect

Which process is essential for the growth of an organism?

In the given diagram,what do $A$ and $B$ indicate? Choose the correct option.

The first step in the process of plant growth is $.......$.

Identify the correct and incorrect statements from the following.
$(i)$ $17,500$ new cells are produced per hour by a single maize root apical meristem.
$(ii)$ With the help of length,growth of pollen tube is measured.
$(iii)$ The growth of the leaf is measured in terms of volume.
$(iv)$ Cells in a watermelon may increase in size by up to $3,50,000$ times.