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Modes of Nutrition
Autotrophic Nutrition…read more

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Use external sources of energy (energy from sun or chemical reactions) in the
synthesis of organic food materials. Autotrophs are the producers in the
Photosynthetic Autotrophs-
Obtain energy from suns radiation which is used to build essential organic
compounds from inorganic molecules by the process of photosynthesis.
Contain pigment, chlorophyll, to absorb light energy.
Examples ­ algae, green plants
Chemosynthetic Autotrophs-
Use energy from certain chemical reactions to synthesise organic molecules from
inorganic molecules.…read more

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Parasitic Nutrition-
A parasite is an organism which lives in close association with another living
organism, the host.
The parasite is dependent upon the host for food and can cause the host
Endoparasites live inside their host; Ectoparasites live on the outside of their
host.…read more

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Adaptations of Herbivores
Upper incisors replaced by horny pad
Sideways movement of jaw allows grass to be cut by lower incisors and
canines against horny pad.
Roots of teeth open so can grow continually
Diastema, toothless gap between incisors and premolars for forming bolus
Premolars and molars all same height and flat allowing sideways movement of
jaw.…read more


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