Which of the following statements are true regarding factors affecting growth?

(i) Necessary conditions for growth –Water, oxygen and nutrients.

(ii) The plant cells grow in size by cell enlargement which in turn requires water.

(iii) Turgidity of cells helps in extension growth.

(iv) Plant growth and further development is intimately linked to the water status of the plant.

(v) Water also provides the medium for enzymatic activities needed for growth.

(vi) Nutrients (macro and micro essential elements) are required by plants for the synthesis of protoplasm and act as source of energy.