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Functions of Synergids
Ultra structurally the structure and concentration of cell organelles reveals that synergids are metabolically active. The following Wee functions are attributed to synergids.
1. Directing of pollen tube growth by secreting some chemotropically active substances.
2. The degenerating synergids form the site for pollen tube discharge in the embryo sac.
3. The filiform apparatus may aid in the absorption and transportation of materials into the embryo sac from the nucellus.
Explain Precautions for Gram Staining of Bacterial Cultures? 1. Heat fix the smear, otherwise cells would be washed off. 2. Fresh 24 hrs old culture should be used. Gram var
Glyceraldehyde has a one asymmetric carbon atom the central one and so two stereoisomers which is also known as optical isomers are possible, which is two forms of glyceraldehyde,
SOIL TEXTURE AND STRUCTURE We have seen that soils are predominantly composed of particles of various sizes derived from the disintegration or decomposition of parent rock materi
Q. What is the function of the pupil and of the iris? The iris works like the diaphragm of a photographic camera since it has muscles that relax or contract varying the pupil d
What is the significance of the -R group (variable radical) in an amino acid molecule? The -R group, also known as a lateral chain, is the variable part of the amino acid molec
Explain Procedure for Preparation of Bacterial Smear? Now carry out the exercise using the steps enumerated herewith: 1. Collect swab samples from the suitable sampling site
#what is the habitat of phylum protozoa
Explain Water Holding or Hydration Capacity (WHC) and Viscosity? WHC refers to the 'ability of fibre to bind water', just as dry sponge does when soaked in water. WHC of the fi
scientific name of apple
Initiation of Aseptic Cultures The nutrient medium (basal medium) used for plant tissue culture would promote luxuriant growth of micro-organisms such as bacteria and fungi. W
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