Match the following (Condition for growth):

$P$	$Q$
$1.$ Nutrients (Macro and Micro)	$a.$ Medium for enzymatic activities
$2.$ Oxygen	$b.$ Synthesis of protoplasm and act as a source of energy
$3.$ Water	$c.$ Releasing metabolic energy for growth activities

Identify the types of growth shown in the figure below.

What is the effect of rubbing on a leaf?

Auxanometer is meant for

The term "Grand period of growth" was given by

Which of the following statements are correct regarding the conditions necessary for plant growth?
i. Microelements and macroelements are required for the proper growth of the plant.
ii. For proper growth of plant,optimum temperature ranges between $15^{\circ} C-25^{\circ} C$.
iii. In the absence of oxygen,the process of respiration and release of energy takes place in all plants.
iv. Gravitational force decides the direction of growth of the shoot and root.
v. Light is essential for the germination of some seeds and photosynthesis.