Xylem and phloem together constitute the ___________.

The muscles that occur in the intestine are _____________.

______________ form the most important elements of the nervous tissue.

____________ helps in providing buoyancy to the aquatic plants.

___________ plays a role in wound healing, regeneration and grafting.

Contractility is the special property of ________ tissue.

________________ muscles are voluntary.

_______________ is composed of collagen fibres.

Lacunae is seen in ______________.

_________ helps in the exchange of gases.