nutrition- required by plants for
TRANSCRIPT
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Nutrition- required by plants for living and carrying out various activities
The mode of nutrition, where the organism depends on other organisms to provide its nutrition, is called Heterotrophic nutrition.
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DR.NAINESH MODI-M.G.Sc.I.-AHMEDABAD
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DR.NAINESH MODI-M.G.Sc.I.-AHMEDABAD
They are classified as followsPARASITIC,
SAPROPHYTICSYMBIOTIC,
INSECTIVOROUS
Dr.A.M.Shukla
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Obligate or total parasitesi.Total stem parasitesii.Total root parasites
Partial parasitesi.Partial stem parasitesii.Partial root parasites
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E.g., Cuscuta
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Cuscuta is rootless, yellow colored, slender stem plant with small scaly leaves, which twines around the host plant.
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It produces haustoria which enters the vascular bundle of host plant to absorb food and water.
haustorium
Host v.b
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Orobanche is commonly known as broom rape.
It has scale leaves and pinkish or bluish flowers.
It is usually parasitic on Brinjal, Tobacco. E.g., Orobanche, Balanophora,
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DR. A.M.SHUKLA-M.G.Sc.I.-AHMEDABAD
OROBANCHE
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DR. A.M.SHUKLA-M.G.Sc.I.-AHMEDABAD
SOME SPECIES OF BALANOPHORA
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Dr. A.M.Shukla, M.G.Sc.Institute
Rafflesia
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The primary haustoria reach up to the cortex of the host which runs longitudinally.
It sends secondary haustoria which make connection with the xylem of the host and absorbs water and minerals.
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viscum
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Santalum album is the very popular example which grows in south India
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Saprophytes are those plants which grows and lives on dead decaying organic mater of animals and plants.
Many bacteria and fungi have this type of mode of nutrition
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DR. A.M.SHUKLA-M.G.Sc.I.-AHMEDABAD
MUSHROOM
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Grows in humus rich soil
Ectotrophic mycorrhiza
Aerial shoots non-green
Mycorrhiza help for nutrition
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DR.NAINESH MODI-M.G.Sc.I.-AHMEDABAD
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The term symbiotic refers to a partnership of two dissimilar plants in which both are mutually benefitted.
The most common example of symbiosis is that of mycorrhiza.
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1.Pitcher plant.2.Dionea.3.Utricularia.4.Drosera.
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The Lower Petiole is large and Flattened, upper part of Petiole is elongated and Tendrillar whereas the Lamina is modified into a pitcher
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DR.NAINESH MODI-M.G.Sc.I.-AHMEDABAD
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Dionea is commonly called Venus fly trap. The Plant is a herb bearing a rosette of leaves. Leaves have winged petiole and lamina modified into two toothed jaws normally open at an angle of 40-50 forming a trap.
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Aquatic plantThe Plant body
is rootless with much branched slender stem which bears dissected leaves
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UTRICULARIA
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DR.NAINESH MODI-M.G.Sc.I.-AHMEDABAD
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DR.NAINESH MODI-M.G.Sc.I.-AHMEDABAD
UTRICULARIA
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The Plants are herbaceous and grow in water logged places. The mature plant bears about 6-12 leaves forming a rosette
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DR.NAINESH MODI-M.G.Sc.I.-AHMEDABAD
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