Question

Development of shoot and root in tissue culture is determined by _________________.

• A. Cytokinin and auxin ratio
• B. Enzymes
• C. Temperature
• D. Plant nutrients

Answer 1

The correct option is A Cytokinin and auxin ratio

Auxins and cytokinins are the most widely used plant growth regulators in plant tissue culture and their amount determined the type of culture established or regenerated. The high concentration of auxins generally favors root formation, whereas the high concentration of cytokinins promotes shoot regeneration.

So, option A is the correct option.