Assertion : Cambium is a lateral meristem and cause growth in width.

Reason : Cambium is made up of fusiform and ray initials in stem.

Reason : Disease causing agents cannot grow on cuticle and cannot invade the cuticle.

Reason : Xylem and phloem form conducting tissue of the plant.

Reason : Spongy mesophyll contains less chloroplasts than palisade mesophyll cells.

Reason : The lower epidermis contains a large number of stomata

Reason : Bulliform leaves store water.

Reason : Intercalary meristems form permanent tissues.

Reason : Hollow tree trunks are due to the disappearance of sapwood.

Or

Whose living cells provide tensile and mechanical strength