es
CLASS 10 NOTES
SCIENCE
Life Processes
PRASHANT KIRAD
, PRASHANT KIRAD
Life processes are the basic processes in living organisms which are necessary for
maintaining their life
Nutrition. Respiration Transportation Excretion
Herbivores eat only plant
grass, e.g. cow, goat.
Autotrophic Nutrition Heterotrophic Nutrition
prepare their own food depend on other sources for their food
Carnivores eat other
animals. e.g. lion, tiger.
plants, algae, plankton Dogs, birds, fish, and humans
and bacteria Omnivores feed on both
plants & animals. e.g. humans
Saprophytic Nutrition Parasitic Nutrition Holozoic Nutrition
dead and decaying bodies, feeds on other living ingest solid or liquid food
e.g. yeasts, mushrooms. organisms e.g. lice (जूँ) particles and then digest, e.g.
and tapeworm humans, dogs
Nutrition: taking in food and converting it into energy and other vital nutrients required
for life.
D
RA
*Organisms use enzymes to break down complex substances into simpler ones for
growth and maintenance*
KI
Autotrophic Nutrition:
Photosynthesis: process by which green plants and certain other organisms transform
T
light energy into chemical energy.
AN
Carbon dioxide (CO₂) + Water (H₂O) + Light energy → Glucose (C₆H₁₂O₆)+ Oxygen (O₂).
H
Chlorophyll
6CO₂ + 12H₂O C₆H₁₂O₆ + O₂.
AS
Sunlight
Unused carbohydrates - stored as starch in plants (energy reserve)
PR
Humans - energy is stored as glycogen.
(i) Light absorption by chlorophyll JOSH METER?
(ii) Light energy converts to chemical energy; water splits into hydrogen and oxygen
(iii) Carbon dioxide reduces to carbohydrates.
Stomata: CO₂ is taken ,tiny pores on leaves for gas
exchange.
Guard Cells: Control opening and closing of stomata.
Water Loss: Stomata close to prevent water loss, stomata close when carbon
dioxide isn't needed
Plants absorb water and essential nutrients (nitrogen, phosphorus, etc.) from soil.
Nitrogen: Vital for proteins, absorbed as nitrates/nitrites or organic compounds
from bacteria.
Paramecium: Has a definite shape, Takes in food at a specific spot and Cilia move food
to this spot.
CLASS 10 NOTES
SCIENCE
Life Processes
PRASHANT KIRAD
, PRASHANT KIRAD
Life processes are the basic processes in living organisms which are necessary for
maintaining their life
Nutrition. Respiration Transportation Excretion
Herbivores eat only plant
grass, e.g. cow, goat.
Autotrophic Nutrition Heterotrophic Nutrition
prepare their own food depend on other sources for their food
Carnivores eat other
animals. e.g. lion, tiger.
plants, algae, plankton Dogs, birds, fish, and humans
and bacteria Omnivores feed on both
plants & animals. e.g. humans
Saprophytic Nutrition Parasitic Nutrition Holozoic Nutrition
dead and decaying bodies, feeds on other living ingest solid or liquid food
e.g. yeasts, mushrooms. organisms e.g. lice (जूँ) particles and then digest, e.g.
and tapeworm humans, dogs
Nutrition: taking in food and converting it into energy and other vital nutrients required
for life.
D
RA
*Organisms use enzymes to break down complex substances into simpler ones for
growth and maintenance*
KI
Autotrophic Nutrition:
Photosynthesis: process by which green plants and certain other organisms transform
T
light energy into chemical energy.
AN
Carbon dioxide (CO₂) + Water (H₂O) + Light energy → Glucose (C₆H₁₂O₆)+ Oxygen (O₂).
H
Chlorophyll
6CO₂ + 12H₂O C₆H₁₂O₆ + O₂.
AS
Sunlight
Unused carbohydrates - stored as starch in plants (energy reserve)
PR
Humans - energy is stored as glycogen.
(i) Light absorption by chlorophyll JOSH METER?
(ii) Light energy converts to chemical energy; water splits into hydrogen and oxygen
(iii) Carbon dioxide reduces to carbohydrates.
Stomata: CO₂ is taken ,tiny pores on leaves for gas
exchange.
Guard Cells: Control opening and closing of stomata.
Water Loss: Stomata close to prevent water loss, stomata close when carbon
dioxide isn't needed
Plants absorb water and essential nutrients (nitrogen, phosphorus, etc.) from soil.
Nitrogen: Vital for proteins, absorbed as nitrates/nitrites or organic compounds
from bacteria.
Paramecium: Has a definite shape, Takes in food at a specific spot and Cilia move food
to this spot.
