- Introduction
- Rest time! Have fun
- Physics
- Chemistry
- BIOLOGY
- Reaching the age of Adolescence
- CROP PRODUCTION AND MANAGMENT
- Cells : The basic structural unit of life
- Nutrition in human beigns
- RESPIRATION IN HUMAN BEIGNS
- TRANSPORTATION IN HUMAN BEIGNS
- excretory system in human beigns
- NERVOUS SYSTEM
- PHOTOSYNTHESIS
- Respiration in plants
- REPRODUCTION IN PLANTS
- MOVEMENTS IN PLANTS
- Forest our lifeline
- WASTE WATER STORY
- WEATHER,CLIMATE AND ITS ADAPTATION .
- Reaching the age of Adolescence
- Model tests
- Animation time
MOVEMENTS IN PLANT
MOVEMENTS IN PLANTS
MOST OF THE PLANTS ARE STATIONARY . HOWEVER SOME LOWER GROUPS OF PLANTS SHOW LOCOMOTION WITH THE HELP OF CILIA . HIGHER PLANTS CAN ONLY EXHIBIT CHANGE IN POSITION OF THERE ORGANS .
CONDITIONS NECESSARY FOR PLANT MOVEMENT
A) WATER - AN ADEQUATE SUPPLY OF WATER IS ALWAYS NECESSARY FOR CERTAIN KINDS OF MOVEMENT .
B)TEMPERATURE - MOVEMENTS OF PLANTS CAN ONLY OCCUR WITHIN A CERTAIN RANGE OF TEMPERATURE .
C) OXYGEN - THE ENERGY GENRATED DURING RESPIRATION DUE TO OXYGEN HELPS THE PLANT TO MOVE .
D) HORMONES - SOME PLANT HARMONES ARE RESPONSIBLE FOR SOME TYPE OF MOVEMENTS .
TYPES OF MOVEMENT IN PLANTS
THERE ARE THREE MAJOR TYPES OF MOVEMENTS SHOWN BY PLANTS THEY ARE -
1)TACTIC MOVEMENT -
THE FREE TYPE OF MOVEMENTS INCLUDED BY SOME EXTERNAL STIMULI LIKE LIGHT , TEMPERATURE,CHEMICALS, ETC ARE CALLED TACTIC MOVEMENT OR TAXISMS .
TYPES OF TACTIC MOVEMENT
A) PHOTOTAXIS - MOVEMENT OF ORGANISM INCLUDED BY LIGHT IS PHOTOTAXIS .
B)CHEMOTAXIS - MOVEMENT OF ORGANISM INCLUDED BY CHEMICAL SUBSTANCES IS CHEMOTAXIS.
C)THERMOTAXIS - MOVEMENT DUE TO CHANGE OF TEMPERATURE IS THERMOTAXIS .
2) TROPIC MOVEMENT
WHEN THE DIRECTION OF RESPONSIBLE OF PLANT ORGANS BEARS A DEFINITE RELATION WITH EITHER TOWARDS OR AWAY FROM EXTERNAL STIMULUS ,THEN THE MOVEMENT IS TROPHIC MOVEMENT .
TYPES OF TROPHIC MOVEMENT
A) PHOTOTROPHIC MOVEMENTS - MOVEMENT OF PLANT ORGANS IN RESPONSE TO SOURCE OF LIGHT ARE PHOTOTROPHIC MOVEMENTS .
B)GEOTROPHIC MOVEMENTS - THE MOVEMENT OF PLANT ORGANS IN RESPONSE TO THE DIRECTION OF THE FORCE OF GRAVITY ARE GEOTROPHIC MOVEMENTS .
C) HYDROTROPHIC MOVEMENTS - THE MOVEMENT OF PLANT ORGANS IN RESPONSE TO SOURCE OF WATER ARE HYDROTROPHIC MOVEMENTS .
3)NASTIC MOVEMENTS
WHEN THE DIRECTION OF RESPONSE OF THE PLANT ORGANS BEAR NO DEFINITE RELATION TO THE DIRECTION OF EXTERNAL STIMULUS AND ORGANS BEHAVE INDIFFERENTLY , THEN THE MOVEMENT IS CALLED NASTIC MOVEMENTS .
TYPES OF NASTIC MOVEMENTS
A)PHOTONASTY - THE MOVEMENT INCLUDED BY THE CHANGE IN LIGHT INTENSITY IS CALLED PHOTONASTY .
B)THERMONASTY-THE MOVEMENT INCLUDED VARIATION OF TEMPERATURE IS CALLED THEROMONASTY .
C)CHEMONASTY- THE MOVEMENT INCLUDED BY CHANGE IN INTENSITY OF CHEMICAL SUBSTANCES IS CALLED CHEMONASTY.
D)NYCTINASTY - THE MOVEMENT INCLUDED BY CHANGE IN BOTH LIGHT AND TEMPERATURE INTENSITY IS CALLED NYCTINASTY
E)SEISMONASTY- THE MOVEMENT IN RESPONSE TO THE INTENSITY OF MECHANICAL STIMULI SUCH AS CONTACT WITH SHOCK,PRESSURE,ETC. IS CALLED SEISMONASTY .
MOST OF THE PLANTS ARE STATIONARY . HOWEVER SOME LOWER GROUPS OF PLANTS SHOW LOCOMOTION WITH THE HELP OF CILIA . HIGHER PLANTS CAN ONLY EXHIBIT CHANGE IN POSITION OF THERE ORGANS .
CONDITIONS NECESSARY FOR PLANT MOVEMENT
A) WATER - AN ADEQUATE SUPPLY OF WATER IS ALWAYS NECESSARY FOR CERTAIN KINDS OF MOVEMENT .
B)TEMPERATURE - MOVEMENTS OF PLANTS CAN ONLY OCCUR WITHIN A CERTAIN RANGE OF TEMPERATURE .
C) OXYGEN - THE ENERGY GENRATED DURING RESPIRATION DUE TO OXYGEN HELPS THE PLANT TO MOVE .
D) HORMONES - SOME PLANT HARMONES ARE RESPONSIBLE FOR SOME TYPE OF MOVEMENTS .
TYPES OF MOVEMENT IN PLANTS
THERE ARE THREE MAJOR TYPES OF MOVEMENTS SHOWN BY PLANTS THEY ARE -
1)TACTIC MOVEMENT -
THE FREE TYPE OF MOVEMENTS INCLUDED BY SOME EXTERNAL STIMULI LIKE LIGHT , TEMPERATURE,CHEMICALS, ETC ARE CALLED TACTIC MOVEMENT OR TAXISMS .
TYPES OF TACTIC MOVEMENT
A) PHOTOTAXIS - MOVEMENT OF ORGANISM INCLUDED BY LIGHT IS PHOTOTAXIS .
B)CHEMOTAXIS - MOVEMENT OF ORGANISM INCLUDED BY CHEMICAL SUBSTANCES IS CHEMOTAXIS.
C)THERMOTAXIS - MOVEMENT DUE TO CHANGE OF TEMPERATURE IS THERMOTAXIS .
2) TROPIC MOVEMENT
WHEN THE DIRECTION OF RESPONSIBLE OF PLANT ORGANS BEARS A DEFINITE RELATION WITH EITHER TOWARDS OR AWAY FROM EXTERNAL STIMULUS ,THEN THE MOVEMENT IS TROPHIC MOVEMENT .
TYPES OF TROPHIC MOVEMENT
A) PHOTOTROPHIC MOVEMENTS - MOVEMENT OF PLANT ORGANS IN RESPONSE TO SOURCE OF LIGHT ARE PHOTOTROPHIC MOVEMENTS .
B)GEOTROPHIC MOVEMENTS - THE MOVEMENT OF PLANT ORGANS IN RESPONSE TO THE DIRECTION OF THE FORCE OF GRAVITY ARE GEOTROPHIC MOVEMENTS .
C) HYDROTROPHIC MOVEMENTS - THE MOVEMENT OF PLANT ORGANS IN RESPONSE TO SOURCE OF WATER ARE HYDROTROPHIC MOVEMENTS .
3)NASTIC MOVEMENTS
WHEN THE DIRECTION OF RESPONSE OF THE PLANT ORGANS BEAR NO DEFINITE RELATION TO THE DIRECTION OF EXTERNAL STIMULUS AND ORGANS BEHAVE INDIFFERENTLY , THEN THE MOVEMENT IS CALLED NASTIC MOVEMENTS .
TYPES OF NASTIC MOVEMENTS
A)PHOTONASTY - THE MOVEMENT INCLUDED BY THE CHANGE IN LIGHT INTENSITY IS CALLED PHOTONASTY .
B)THERMONASTY-THE MOVEMENT INCLUDED VARIATION OF TEMPERATURE IS CALLED THEROMONASTY .
C)CHEMONASTY- THE MOVEMENT INCLUDED BY CHANGE IN INTENSITY OF CHEMICAL SUBSTANCES IS CALLED CHEMONASTY.
D)NYCTINASTY - THE MOVEMENT INCLUDED BY CHANGE IN BOTH LIGHT AND TEMPERATURE INTENSITY IS CALLED NYCTINASTY
E)SEISMONASTY- THE MOVEMENT IN RESPONSE TO THE INTENSITY OF MECHANICAL STIMULI SUCH AS CONTACT WITH SHOCK,PRESSURE,ETC. IS CALLED SEISMONASTY .