Question

Please give me the correct answer.

$\text{\underline{Urgent..!!}}$

(^_^) /❤️​

Answer 1

$\textit{Formation of mitotic spindle and cell wall during cell division :}$

Calcium is needed  for the formation of mitotic spindle .

$\textit{Formation of pollen tube germination and elongation :}$

Boron is needed for the pollen tube germination and also helps in cell elongation .

Calcium is essential for the formation of cell wall during the mitotic cell division .

It also helps in the formation of spindle fibres .

Other functions of calcium in plants are as follows :-

→ It helps in activation of enzymes .

→ It helps to provide valuable nutrients to the plant body .

Boron helps in both in cell elongation as well as in germination of pollen grains from anther to stigma .

The most important elements in the plant are nitrogen and potassium.