MCQ
Besides phellem, phellogen, root periderm comprises of
- ASecondary cortex
- BPhelloderm
- CBark
- ✓More than one option is correct
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$I.$ a membrane,
$II$ proton pump,
$III$ proton gradient
$I.$ $O_{2}$ helps in releasing metabolic energy, which is essential for growth
$II.$ Nutrients are required by plants for the synthesis of protoplasm
$III.$ Change in temperature could be the detrimental for the survival of an organism
$IV$. Light and gravity don't affect the stages of growth
Choose the correct option
$R-$ Exchange of $DNA$ in chromosome seen in mitosis.