1. Nutrients like carbohydrates, fats, proteins, vitamins, and minerals are components of food that help living organisms build their bodies, grow, repair damage, and provide energy for life processes.
2. There are two main modes of nutrition - autotrophic nutrition where organisms can produce their own food, and heterotrophic nutrition where organisms obtain food directly or indirectly from plants.
3. Photosynthesis is the process by which plants produce their own food, using sunlight, water, carbon dioxide, and chlorophyll to produce carbohydrates and oxygen.
Class 7 Chapter 1
Nutrition in Plants
Hey everyone, I am a student, Aanya Bhatnagar and I can understand that from which type of ppt will we understand the concept. I have tried very much!
Hope you like it!
Chapter - 1, Nutrition in Plants, Science, Class 7 Shivam Parmar
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Chapter 1 - Nutrition in Plants, Science, Class 7
INTRODUCTION
NUTRIENTS
MODE OF NUTRITION
CELLS IN LIVING ORGANISMS
SINGLE AND MULTI - CELLULAR ORGANISMS
HOW DO PLANTS PREPARE THEIR FOOD?
PROCESS OF PHOTOSYNTHESIS
ULTIMATE SOURCE OF ENERGY FOR ALL LIVING ORGANISMS
HOW DO PLANTS GENERATE PROTEINS AND FATS
OTHER MODES OF NUTRITION
PARASITIC MODE OF NUTRITION
INSECTIVOROUS MODE OF NUTRITION
SAPROPHYTIC MODE OF NUTRITION
SYMBIOTIC MODE OF NUTRITION
REPLENISHING THE SOIL WITH NUTRIENTS
Every topic of this chapter is well written concisely and visuals will help you in understanding and imagining the practicality of all the topics.
By Shivam Parmar (Entrepreneur)
A simple Q/ A on Nutrition in plants for class 7. This ppt covers the basic definition on autotrophs, heterotrophs, parasites, symbiosis, insectivores plant and much more ........
All living organisms such as plants and animals require food. So food is essential for all living organisms. Plants are capable of making their food themselves but humans and animals cannot.
Carbohydrates, proteins, fats, vitamins and minerals are essential components of food, these components are called Nutrients.
A workshop hosted by the South African Journal of Science aimed at postgraduate students and early career researchers with little or no experience in writing and publishing journal articles.
Class 7 Chapter 1
Nutrition in Plants
Hey everyone, I am a student, Aanya Bhatnagar and I can understand that from which type of ppt will we understand the concept. I have tried very much!
Hope you like it!
Chapter - 1, Nutrition in Plants, Science, Class 7 Shivam Parmar
I have expertise in making educational and other PPTs. Email me for more PPTs at a very reasonable price that perfectly fits in your budget.
Email: parmarshivam105@gmail.com
Chapter 1 - Nutrition in Plants, Science, Class 7
INTRODUCTION
NUTRIENTS
MODE OF NUTRITION
CELLS IN LIVING ORGANISMS
SINGLE AND MULTI - CELLULAR ORGANISMS
HOW DO PLANTS PREPARE THEIR FOOD?
PROCESS OF PHOTOSYNTHESIS
ULTIMATE SOURCE OF ENERGY FOR ALL LIVING ORGANISMS
HOW DO PLANTS GENERATE PROTEINS AND FATS
OTHER MODES OF NUTRITION
PARASITIC MODE OF NUTRITION
INSECTIVOROUS MODE OF NUTRITION
SAPROPHYTIC MODE OF NUTRITION
SYMBIOTIC MODE OF NUTRITION
REPLENISHING THE SOIL WITH NUTRIENTS
Every topic of this chapter is well written concisely and visuals will help you in understanding and imagining the practicality of all the topics.
By Shivam Parmar (Entrepreneur)
A simple Q/ A on Nutrition in plants for class 7. This ppt covers the basic definition on autotrophs, heterotrophs, parasites, symbiosis, insectivores plant and much more ........
All living organisms such as plants and animals require food. So food is essential for all living organisms. Plants are capable of making their food themselves but humans and animals cannot.
Carbohydrates, proteins, fats, vitamins and minerals are essential components of food, these components are called Nutrients.
A workshop hosted by the South African Journal of Science aimed at postgraduate students and early career researchers with little or no experience in writing and publishing journal articles.
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2. 1) Nutrients :-
The components of food like carbohydrates, fats, proteins vitamins
and minerals are called nutrients.
Nutrients help living organisms :-
i) To build their bodies.
ii) To grow.
iii) To repair the damaged parts of their bodies.
iv) To provide energy to carry out life processes.
3. 2) Nutrition :-
The mode of taking food by an organism and its utilization in the
body is called nutrition.
3) Modes of nutrition :- There are two main modes of nutrition in
living organisms. They are autotrophic nutrition and heterotrophic
nutrition.
i) Autotrophic nutrition :- is nutrition in which organisms can prepare
their own food.
Organisms which can prepare their own food are called autotrophs.
ii) Heterotrophic nutrition :- is nutrition in which organisms get their
food directly or indirectly from plants.
Organisms which get their food directly or indirectly from plants are
called heterotrophs.
4. 4)Photosynthesis - Food making process in plants :-
Photosynthesis is the process by which plants prepare their on food
by using sunlight, water, carbon dioxide and chlorophyll.
Photosynthesis take place in the leaves.
i) Sunlight is obtained from the sun.
ii) Water is absorbed by the roots and transported to the leaves.
iii) Carbon dioxide is taken from the air through small pores in the
leaves called stomata.
iv) Chlorophyll are the green pigments present in the leaves.
5.
6. Chlorophyll uses the energy from sunlight to prepare food by using
water and carbon dioxide. The food prepared is carbohydrate which is
then converted into starch. During photosynthesis oxygen is released.
Equation of photosynthesis :-
Sunlight
Carbon dioxide + Water Carbohydrate + Oxygen
Chlorophyll
7. 5) Synthesis of proteins :-
The soil has some bacteria which convert nitrogen from the air into
usable nitrogen in the soil. Farmers also add fertilisers containig
nitrogen into the soil. Plants absorb this nitrogen from the soil along
with water and other constituents to prepare proteins and fats.
8. 6) Other modes of nutrition in plants :-
i) Parasitic plants :- are plants which do not have chlorophyll and
cannot prepare their own food. They get their food from other plants
called host . Eg :- Cuscuta ( Amarbel)
9. • ii) Insectivorous plants :- are plants which feed on insects. Eg:-
Pitcher plant. The leaf of the pitcher plant is modified into a pitcher.
The end of the pitcher has a lid which can open and close. When an
insect enters the pitcher, the lid closes. The insect is then digested
by digestive juices inside the pitcher.
10. • iii) Saprotrophs :- are plants which do not have chlorophyll and
cannot prepare their on food. They get their food from dead and
decaying organic matter. Eg :- mushroom, bread mould etc. They
produce digestive juice on the dead and decaying organic matter and
convert it into a solution and then absorb the nutrients from the
solution.
11. iv) Symbiotic relationship :- Some plants live together and share
shelter and nutrients. Eg :- lichens. In lichens, an alga and a fungus
live together. The fungus provides shelter, water and minerals to the
alga. The alga provides food to the fungus which it prepares by
photosynthesis.
12. 7) How nutrients are replenished in the soil :-
Plants absorb nutrients from the soil. So the nutrients in the soil
decreases. So farmers add manures and fertilisers to the soil to
increase the nutrients in the soil.
The bacterium called rhizobium which lives in the roots of
leguminous plants like grams, peas, beans etc. converts nitrogen from
the air into soluble form in the soil and makes the soil rich in nitrogen.
In return the plant provides food and shelter to the bacteria. So they
have a symbiotic relationship.
13. Activity – 1 :-
To show that sunlight is necessary for photosynthesis :-
Take two potted plants of the same kind. Keep one in
sunlight and the other in a dark room for 2 – 3 days. Then
take a leaf from both the plants and test for starch.
Put the leaves in a test tube. Pour some spirit in it and put
the test tube in a beaker containing water. Boil the water till
all the green colour in the leaves comes out into the spirit.
Then take the leaves and wash it in water. Put the leaves on
a dish and pour some iodine solution over it.
The leaf of the plant kept in sunlight turns blue black. The
leaf of the plant kept in the dark does not turn blue black.
This shows that sunlight is necessary for photosynthesis.
14. Activity – 2 :-
To observe the fungus bread mould in in bread :-
Take a piece of bread and moisten it with water. Leave it
in a warm place for 2 – 3 days till fluffy patches appear on
them. Observe the patches under a magnifying glass or
microscope. Cotton like threads are seen on the bread.
The cotton like threads are the fungus bread mould.
Bread mould is a saprotroph. Saprotrophs get their food
from dead and decaying organic matter