Elongated cells with thick and lignified walls and tapering ends is a characteristic feature of

(1) Xylem parenchyma

(2) Xylem fibres

(3) Tracheids

(4) Vessels

Dead cell without protoplasm is ___________.

In flowering plants which of the following are main water transporting element

Central cavity is found in

The presence of _________ is characteristic feature of angiosperms.

Xylem parenchyma cells are made up of

1. Cellulose

2. Hemicellulose

3. Both 1 and 2

4. None of the above

Xylem parenchyma store food in the form of

A. Starch

B. Fat

C. Tannins

D. All of the above

Plant tissues have been divided into meristematic and permanent tissue based on

1. differentiation capability

2. division capability

3. symmetry

4. plane of division

Growth is always restricted  to  the specialised regions in plants because of the presence of

1. meristems are present  in some regions only

2. cell division takes place in some regions only

3. differentiated cells are present  some regions only

4. dividing cells in some regions only

Types of meristem on the basis of position or location in plants

1. apical, intercalary, and lateral meristem

2. primary and secondary meristem

3. Pro-meristem, primary meristem, secondary meristem

4. None of these