Assertion : Bones possess longitudinal canals called lacunae.
Reason : Lacunae carry blood vessels & nerves to the bones.

Options

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

Answer

D

Explanation

Bones posses longitudinal channel formed by concentric layers called lamellae. The haversian canal surround blood vessels and nerve cells throughout bones and communicate with bone cells contained in space with dense bone matrix called lacunae through connections called canaliculi.