Apical dominance : Auxin : : Fruit ripening : ?

Which hormone is known as stress hormone ?

Abscissic acid is synthesised from ……

Photoperiodic response is because of pigment ……

The favourable temperature for vernalization is ……

Identify the group of non-mineral elements needed by plants.

The deficiency symptoms of these minerals are visible in young leaves ……

The symptom chlorosis is observed as ………

…… is constituent of chlorophyll.

This is essential for $O_{2}O\_2$ evolution in photosynthesis and for proper solute concentration