Assertion : Ginger has a prostrate-growing rhizome
Reason : Shoot growth is not effected by gravity.

Options

A. If both assertion and reason are true and reason is the correct explaination of assertion
B. If both assertion and reason are true but reason is not correct explaination of assertion
C. If assertion is true but reason is false
D. If both assertion and reason are false.

Answer

B

Explanation

Rhizome is normally a prostrate,thickened stem,creeping horizontally under the surface of the soil.The common example is ginger.It is provided with scaly leaves at the nodes,prossesses a bud in the exil of the scaly leaf and ends in a terminal bud.The reponse of plant to gravity is called geotropism.The roots are positively geotropic and grow downwards,While the shoot is negatively geotyropic and grows away from the gravitaional pull from the centre of earfth.Parts which show no effect of gravity are called ageotropic.