The grand period of growth is called:

In which organisms does growth occur continuously throughout their lifespan?

What is the approximate height of the tallest tree, $Sequoia$ $sempervirens$ (in $m$)?

The phase of maturation is characterised by:
$I.$ Cells attaining their maximal size
$II.$ Proper wall thickening and protoplasmic modification
$III.$ Rapid cell division
Select the correct option.

Etiolation in plants is caused when they

The instrument by which the rate of growth of a stem is accurately measured is: