Fibrovascular bundles or vascular bundles covered by sclerenchymatous sheath are found in
A.Monocot leaf – vascular bundles are covered by parenchymatous bundle sheath.
B. Monocot stem – vascular bundles are covered by sclerenchymatous fibres. So these are called fibrovascular bundles.
C. Monocot root – there is no any covering around the vascular bundles.
D. Dicot stem – there is no any covering around the vascular bundles.
So, the correct option is ‘Monocot stem’.