Tag: crop
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INSECT DIGESTIVE SYSTEM
Insect digestive system is of complete type which means starting from mouth, the alimentary canal terminates as anus. Along its length, alimentary canal is associated with salivary gland, salivary reservoir, hepatic or gastric caeca and Malpighian tubules (act as osmoregulater). Alimentary canal vary in size(diameter), anatomically modified structure as per the type of role during…
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Ecosystem Structure
On the basis of trophic structure, ecosystem is two layered: “trophe = nourishment” Autotrophic Stratum (Green Belt): Upper, self-nourishing layer of chlorophyll-containing plants. Fix the light energy, convert inorganic substances into complex organic compounds which predominate in the stratum. The most intensive autotrophic metabolism occurs in this layer where light energy is available. Heterotrophic Stratum…