THE LIVING WORLD
, WHAT IS LIVING?
THE MAIN CHARACTERISTICS OF LIVING ARE:
(I) GROWTH
(II) REPRODUCTION
(III) METABOLISM
(IV) CELLULAR ORGANIZATION
(V) CONSCIOUSNESS
THOSE CHARACTERISTICS WHICH HAVE NO EXCEPTION IS CALLED
DEFINING PROPERTY OF LIFE.
GROWTH AND REPRODUCTION ARE NOT THE DEFINING PROPERTY OF LIFE
AS WELL AS METABOLISM, CELLULAR ORGANIZATION, CONSCIOUSNESS IS
THE DEFINING PROPERTY OF LIFE.
(I) GROWTH
OVERALL INCREASE IN MASS OR SIZE OF TISSUE OR ORGANISM OR ITS
PARTS IS CALLED GROWTH.
INCREASE IN MASS AND INCREASE IN NUMBER ARE THE TWIN
CHARACTERISTICS OF GROWTH. THIS IS AN IRREVERSIBLE PERMANENT
INCREASE IN SIZE OF THE ORGAN OR ITS PART OR EVEN OF AN INDIVIDUAL
CELL.
GROWTH IS OF TWO TYPES:
• INTRINSIC GROWTH: GROWTH FROM INSIDE OF THE BODY OF LIVING
ORGANISM. THIS IS THE DEFINING PROPERTY OF LIFE.
• EXTRINSIC GROWTH: GROWTH FROM OUTSIDE OF THE BODY OF THE
ORGANISM. LIKE ACCUMULATION OF MATERIAL ON ANY BODY SURFACE . NON-
LIVING EXHIBITS THIS TYPE OF GROWTH.
→ INTRINSIC GROWTH IS OF TWO TYPES:
• INDETERMINATE GROWTH\UNLIMITED GROWTH: GROWTH WHICH OCCURS
CONTINUOUSLY THROUGHOUT THEIR LIFE SPAN. IT OCCURS ONLY IN PLANTS.
2
, WHAT IS LIVING?
THE MAIN CHARACTERISTICS OF LIVING ARE:
(I) GROWTH
(II) REPRODUCTION
(III) METABOLISM
(IV) CELLULAR ORGANIZATION
(V) CONSCIOUSNESS
THOSE CHARACTERISTICS WHICH HAVE NO EXCEPTION IS CALLED
DEFINING PROPERTY OF LIFE.
GROWTH AND REPRODUCTION ARE NOT THE DEFINING PROPERTY OF LIFE
AS WELL AS METABOLISM, CELLULAR ORGANIZATION, CONSCIOUSNESS IS
THE DEFINING PROPERTY OF LIFE.
(I) GROWTH
OVERALL INCREASE IN MASS OR SIZE OF TISSUE OR ORGANISM OR ITS
PARTS IS CALLED GROWTH.
INCREASE IN MASS AND INCREASE IN NUMBER ARE THE TWIN
CHARACTERISTICS OF GROWTH. THIS IS AN IRREVERSIBLE PERMANENT
INCREASE IN SIZE OF THE ORGAN OR ITS PART OR EVEN OF AN INDIVIDUAL
CELL.
GROWTH IS OF TWO TYPES:
• INTRINSIC GROWTH: GROWTH FROM INSIDE OF THE BODY OF LIVING
ORGANISM. THIS IS THE DEFINING PROPERTY OF LIFE.
• EXTRINSIC GROWTH: GROWTH FROM OUTSIDE OF THE BODY OF THE
ORGANISM. LIKE ACCUMULATION OF MATERIAL ON ANY BODY SURFACE . NON-
LIVING EXHIBITS THIS TYPE OF GROWTH.
→ INTRINSIC GROWTH IS OF TWO TYPES:
• INDETERMINATE GROWTH\UNLIMITED GROWTH: GROWTH WHICH OCCURS
CONTINUOUSLY THROUGHOUT THEIR LIFE SPAN. IT OCCURS ONLY IN PLANTS.
2
