PPT: Life Processes in Plants | PPTs for Class 7 PDF Download

 Page 1


Life Processes 
in Plants
Page 2


Life Processes 
in Plants
Introduction
Food Production
Unlike animals, plants 
produce their own food 
through a unique process.
Essential Processes
Photosynthesis, 
respiration, and transport 
are vital for plant survival.
Key Resources
Sunlight, water, carbon 
dioxide, and chlorophyll 
enable plant nutrition and 
growth.
Page 3


Life Processes 
in Plants
Introduction
Food Production
Unlike animals, plants 
produce their own food 
through a unique process.
Essential Processes
Photosynthesis, 
respiration, and transport 
are vital for plant survival.
Key Resources
Sunlight, water, carbon 
dioxide, and chlorophyll 
enable plant nutrition and 
growth.
How Do Plants Grow?
Sunlight
Provides energy for 
food production. 
Plants without 
sunlight develop 
pale or yellow leaves.
Water
Crucial for nutrient 
transport and 
structure. Plants 
without water may 
wilt or die.
Soil Nutrients
Roots absorb minerals like nitrogen, phosphorus, 
and potassium for cell division and growth.
Page 4


Life Processes 
in Plants
Introduction
Food Production
Unlike animals, plants 
produce their own food 
through a unique process.
Essential Processes
Photosynthesis, 
respiration, and transport 
are vital for plant survival.
Key Resources
Sunlight, water, carbon 
dioxide, and chlorophyll 
enable plant nutrition and 
growth.
How Do Plants Grow?
Sunlight
Provides energy for 
food production. 
Plants without 
sunlight develop 
pale or yellow leaves.
Water
Crucial for nutrient 
transport and 
structure. Plants 
without water may 
wilt or die.
Soil Nutrients
Roots absorb minerals like nitrogen, phosphorus, 
and potassium for cell division and growth.
How Do Plants Get Food for Their 
Growth?
Photosynthesis
Plants produce their own food primarily in their leaves.
Energy Storage
Food is stored as starch, a carbohydrate.
Growth Support
Stored food provides energy and building blocks for plant development.
Page 5


Life Processes 
in Plants
Introduction
Food Production
Unlike animals, plants 
produce their own food 
through a unique process.
Essential Processes
Photosynthesis, 
respiration, and transport 
are vital for plant survival.
Key Resources
Sunlight, water, carbon 
dioxide, and chlorophyll 
enable plant nutrition and 
growth.
How Do Plants Grow?
Sunlight
Provides energy for 
food production. 
Plants without 
sunlight develop 
pale or yellow leaves.
Water
Crucial for nutrient 
transport and 
structure. Plants 
without water may 
wilt or die.
Soil Nutrients
Roots absorb minerals like nitrogen, phosphorus, 
and potassium for cell division and growth.
How Do Plants Get Food for Their 
Growth?
Photosynthesis
Plants produce their own food primarily in their leaves.
Energy Storage
Food is stored as starch, a carbohydrate.
Growth Support
Stored food provides energy and building blocks for plant development.
Leaves: The 'Food Factories' of 
Plants
Structure & 
Function
Leaves have broad, flat 
structures ideal for 
capturing sunlight. 
They contain 
chlorophyll, the green 
pigment that enables 
photosynthesis.
Starch 
Production
Leaves store food as 
starch. An iodine test 
turns a leaf blue-black 
if starch is present, 
confirming food 
production.
N o t e : Decolourisation 
helps observe colour 
change more easily.
Chlorophyll's 
Role
Green parts rich in 
chlorophyll produce 
starch when exposed 
to sunlight. Even 
leaves with red, violet, 
or brown pigments 
contain chlorophyll.