Select the wrong statements
$I.$ Primary and secondary phloem gets crushed during secondary growth
$II.$ During secondary growth, primary xylem remains more or less intact
$I$ is correct and $II$ is incorrect
$II$ is correct and $I$ is incorrect
Both are incorrect
Both are correct
Give differences: Heartwood and Sapwood
Commercially important fibres of cotton are
Which of the statements given below is not true about formation of Annual Rings in trees ?
Grafting is not possible in monocots because they