Nutrition in Plants

1. Organisms are of two types they are autotroph and
heterotroph . Auto means self and troph means
nourishment .Hetero means other and troph means
nourishment.
Photosynthesis
Plants make their own food from abiotic components such
as (carbon dioxide, air , soil, sunlight and water.) Leaves
are the food factories of the plant . Carbon dioxide from
air enter through tiny pores called stomata . Water and
minerals present in the soil are absorbed by the roots and
transported to the leaves.
Carbon dioxide +Water + sunlight carbohydrate +oxygen
Chlorophyll
Other Modes Of Nutrition In Plants.
There are some plants which do not contain chlorophyll
and cannot prepare their own food . These plants get their
food from the other plant . They are heterotroph plants.
Heterotroph
Parasite
Insectivores
Saprotrophic
Symbiosis
Nutrition In Plants.

2. Parasite
Parasite live on host and get its food at the expense of its host .
Example : Cuscuta plant
Insectivores
There are some plants which can trap insects and digest them . They have a lid which they can close and
open . When the insect enter into the lid . It will close and it is digested.
Example : Pitcher plant
Saprophyte
Acquire nutrients from dead and decaying plants are saprophyte .
Example : Fungi
Symbiosis
Symbiosis : Have you seen farmers spreading manures and fertilizers . The soil is absorbed by the root and
transported to the leaves . The soil becomes deficient. Manures contain Phosphorus , Potassium and
Nitrogen. Especially crop plants needs more nitrogen . There is a bacteria called Rhizobium . It can take the
atmosphere nitrogen and convert into useable form of nitrogen to the plant. Rhizobium can not prepare its
own food . The plants give food and shelter . Rhizobium gives nitrogen to the plant . This process is called
symbiosis .