Give one function and one deficiency symptom of the following : 

Magnesium

42.

Give one function and one deficiency symptom of the following :

Sulphur

Give one function and one deficiency symptom of the following :

Molybdenum

Define the following:

(i) Parthenocarpy
(ii) Root Pressure.

Define:

(i) Peristalsis

(ii) Multiple fruits

Define:

(i) Reproductive Isolation

(ii) Homologous Organs.