Nutrition: It is the mode of taking food by an
organism and its utilization by the body.
◦ In this mode ,organisms make food themselves
from simple substances. All plants are therefore
◦ In this mode, animals and most other organisms
take in ready made food by the plants.
◦ Plants which do not have chlorophyll cannot
synthesize there food. They take food from other
plants like heterotrophic mode of nutrition. this is
called parasitic mode of nutrition.
Saprotrophic mode of nutrition:
◦ the mode of nutrition in which organisms take in
nutrients in solution form from dead and decaying
Water and minerals present in the soil are
absorbed by the roots and transported to the
Cabon dioxide is taken In through the tiny
pores present on the surface of leaves these
pores surrounded by guard cells is called
Some organisms live together and share
shelter and nutrients this is called symbiotic
For example- certain fungi lives in the roots
of the tree. The tree provides nutrients to the
fungus and, in return, receives help from it to
take up water and nutrients from the soil.
Insectivorous plants :
the plants which eat other insects are called
pitcher plant, venus flytrap.
The process by which
leaves make food
with the help of
carbon dioxide and
water in the
During this process,
oxygen is released
All organisms take food and utilize it to get
energy for the growth and maintenance of
Oxygen is produced during photosynthesis.
During photosynthesis plants take carbon
dioxide and release oxygen.
The plants which eat other plants are called
insectivores plants. Example- pitcher plant,
venus fly trap.