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(a)What do you understand by the term 'monoculture'?
(b) What is one disadvantage of a monoculture?
a) 'Monoculture' is the term applied to the growing of the similar agricultural crop year after year on the same land. It also implies that the crop having exclusively of single species of plant grown in dense stands.
b) Because the crop having of one species of plants in close proximity, any pest or disease will spread easily and quickly to the whole crop.
Operculum - Seed Appendages The term operculum is applied to a plug-like structure formed in the micropylar portion of the seed by proliferation of cells at the tip of the inn
Human respiration Human beings are adopted for terrestrial mode of life. They conduct pulmonary respiration. This system consists of external nostrils, nasal cavities, pharyn
Biological effects: Aflatoxins are acute hepatotoxins and are known to be carcinogenic in some animal species as rat. Aflatoxin B1 is acutely toxic and is responsible for liver nec
Q. What do you mean by Periodical? A periodical is a publication appearing at regular intervals. Each issue is called a number and collectively these numbers comprise a volume.
Minerals :- Zinc Food Source Meats, cereals. Nutritional Functional role Essential nutrient: Deficiency produces loss of appetite, growth retardation, skin
Autoradiography Autoradiography is a modification of the radioactive tracer technique. In this technique, the radioactivity is detected by a thin film of photographic emulsion
Nature of Metabolites in Sieve Tubes The phloem sap contains three major classes of organic compounds - organic acids, amino acids and sucrose besides some cations, anions and
Define the Osazone Test or Phenylhydrazine Reaction? Compounds with -CO-CHOH group form crystalline osazones with phenyl hydrazine. These osazones have characteristic shapes an
excretory organs in spiders?
What are the cytokinins? And where are they made? The Cytokinins are phytohormones active in the promotion of cellular division they slow down the aging of tissues and act toge
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