This document discusses plant tissue. It defines tissue as a group of similar cells that combine to form tissue. There are two main types of plant tissue - meristematic and permanent tissue. Meristematic tissue is made of cells that remain in continuous division and help increase the length and girth of plants. There are three types of meristematic tissue - apical, lateral, and intercalary. Apical meristem is located at growing tips and increases linear growth. Lateral meristem increases girth and occurs on stem and root sides. Intercalary meristem is present at node bases. Cell differentiation occurs when meristematic tissue takes on specific roles, loses ability to divide, and forms permanent tissue types.

1. TISSUE
LEC-1
BY: MISS RITIMA
( YOU TUBE CHANNEL : SHORT SHOT BIOLOGY
FOLLOW @ SLIDE SHARE APP- MISS RITIMABIOLOGYEXP)

2. WHAT IS
TISSUE?
• A GROUP OF CELLS IS
CALLED TISSUUE.
• SIMILAR CELLS
COMBINE TO FORM
TISSUE.
.

3. TYPES OF TISSUE
• PLANT TISSUE
• ANIMAL TISSUE

4. PLANT TISSUE
• THE PLANT TISSUE IS PRIMARILY
CLASSIFIED INTO TWO GROUPS:
a. MERISTEMATIC TISSUE
b. PERMANENT TISSUE

6. MERISTEMATC TISSUE AND
ITS CHRACTERISTICS
• IT IS GROUP OF CELLS WHICH REMAIN IN
CONTINIOUS STATE OF DIVISION AND HELP
IN INCREASING THE LENGTH AND GIRTH OF
THE PLANT.
CHRACTERISTICSOF MERISTEMATICTISSUE
a. SHAPE: THEY MAY BE ROUNDED , OVAL OR
POLYGONAL IN SHAPE.
b. COMPACTLY ARRANGED, NO
INTERCELLULAR SPACES.
c. ABUNDANT CYTOPLASM, LARGE
PROMINENT NUCLEUS
d. DENSE PROTOPLASM AND CONTAINS FEW
OR NO VACUOLE.

7. TYPES OF MERISTEMATIC
TISSUE
a. APICAL MERISTEMATIC TISSUE
b. LATERAL MARISTEMATIC TISSUE
c. INTERCALARY MERISTEMATIC
TISSUE

8. DIFFERENT TYPES OF
MERISTEMATIC TISSUE

10. APICAL
MERISTEM
 APICAL MERISTEM IS
LOCATED AT THE
GROWING TIPS OF THE
STEM AND ROOTS AND
INCREASE THE LENGTH
OF THE STEM OR ROOT.
 IT IS RESPONSIBLE
FOR THE LINEAR
GROWTH OF THE
ORGAN.
EXAMPLE: ROOT
APICAL MERISTEM AND
SHOOT APICAL
MERISTEM.

11. LATERAL
MERISTEM
 IT IS RESPONSIBLE FOR
INCREASE IN THE GIRTH OF
THE PLANT .
 IT OCCURS ON THE SIDES OF
BOTH STEM AND ROOTS .
LATERAL MERISTEM IS OF TWO
TYPES
a. IN FRM OF CORK CAMBIUM
b. IN VASCULAR BUNDLES OF
DICOTS IN FORM OF VASCULAR
CAMBIUM.
ACTIVITY OF THE CAMBIUM
RESULTS IN THE FORMATION
OF SECONDRY GROWTH.

12. INTERCALARY
MERISTEM
IT IS PRESENT
AT THE BASE
OF NODES ,
BASE OF
INTERNODES
OR AT THE
BASE OF THE
LEAF.

13. CELL DIFFERENTIATION
• WHEN MERISTEMATIC TISSUE TAKE UP
SPECIFIC ROLE AND LOOSE THEIR
ABITY TO DIVIDE , AS A RESULT THEY
FORM PERMANENT TISSUE.
• THIS PROCESS OF TAKING UP
PERMANENT SHAPE , SIZE AND
FUCTION IS CALLED CELL
DIFFERENTIATION.
• DIFFERENTIATION LEADS TO THE
DEVELOPMENT OF VARIOUS TYPES OF
PERMANENT TISSUE.

14. THANKS FOR WATCHING