Equipment used for the measurement of growth in plants is known as

Movements of leaves of sensitive plant, $Mimosa \text{ } pudica$, are due to

Define the following terms:
$(1)$ Growth
$(2)$ Growth rate

Shock movement in 'touch-me-not' plant is

Find out the correct statement$(s)$.
$(a)$ Growth in plants is internal/intrinsic and open-ended.
$(b)$ Formation of cellular materials is called real or protoplasmic growth.
$(c)$ Plant growth is diffused only during the early embryonic stage.

Typical growth curve in plants is