Hello learners, This is class 7 chapter 1 ppt, Nutrition in Plants, Hope it will be helpful for you.

1. CH-1 NUTRTION IN PLANTS
1) WHAT IS NUTRITION ?
2) MODE OF NUTRITON IN PLANT( AUTOTROPHIC,
PARASITIC, SAPROTROPHIC, ISECTIVOROUS,
SYMBIOSIS)
3) PHOTOSYNTHESIS
4) HOW NUTRIENTS ARE REPLENISHED IN THE SOIL.
5) IMPORTANT QUESTIONS (SCHOOL EXAM,
COMPETITATIVE EXAMS)

2. WHAT IS NUTRITION?
 NUTRITION IS PROCESS OF INTAKE OF FOOD,
DIGESTION,ABSORPTION AND ITS UTILISATION
WHILE NUTRIENTS ARE ELEMENTS OF FOOD
LIKE-
 CARBOHYDRATE
 PROTEIN
 FAT (Reserve food in animals)
 VITAMINS, MINERALS,
 ROUGHAGE,WATER

3. MODE OF NUTRITON IN PLANT
01-AUTOTROPHIC (Auto=self + Troph= To Feed)
As we know green plants prepare their food by
themselves with the help of process Photosynthesis.
PHOTOSYNTHESIS (Photo=Light + Synthesis=To form)
Means to form something in presence of light
The process of preparation of food by plant with the help
of carbon di oxide, water in presence of Sunlight and
Chlorophyll. (Plants reserve food is starch)

4. 2-PARASITIC -(Para-other + site-live)
organism who take nutrition from others
living organisms are called parasite(they
may cause disease)
Eg.- Rafflesia,Cuscuta (Mosquito, leech)

5. 3-SAPROTROPH- Organism feed on
dead and decaying organic matter are
called saprotroph,
for eg- Mushroom, Algae, Fungi.
They are good for environment

6. 3-INSECTIVOROUS
Plant who eat insects to fulfill
their nutritional requirement.
Eg- Pitcher plant, Sundew,
bladderwort.

7. 4-SYMBIOSIS-
The relationship between two or more
organisms which benefit all of them.
Eg-Lichen(combination of algae and fungi)
(Commensalism-in animal)

8. Do we follow Symbiosis in our
daily life….?

9. HOW NUTRIENTS ARE REPLENISHED IN
THE SOIL?
(Replenish=fulfill again)
Naturally- By micro-organisms, Nitrogen
cycle,
Manually- By adding manure and
fertilizers.

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