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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 the Meaning of Transfer of Culture Transfer of culture can be done from one liquid media to another liquid media or from liquid to solid media or vice versa. The steps
What is Computerised tomography Computerised tomography (CT, but also known as computerised axial tomography, or CAT) provides structural images. To generate brain scans, low l
Food Sources of Proteins Food protein sources can be divided into 3 major categories: a. Protein of Animal Origin b. Protein of Plant Origin c. Single cell protein
Which of the following pairs of functional groups CANNOT react with each other by a dehydration reaction? Select one: a. Carboxyl;Hydroxyl b. Carboxyl;Sulfhydryl c. Pho
Q Which is the kind of nitrogen waste birds produce? Why does this feature, besides being an adaptation to the terrestrial environment, also mean an adaptation to flight? Birds
Q. How do sponges try to protect themselves against harm from the environment? Is that method rudimentary or efficient? Sponges can close their pores to avoid the entrance of w
What is the mode of nutrition in fish,human,amoeba,scorpian & toad ?
Q Does RNA molecule have two polynucleotide chains like the DNA? Only DNA has two polynucleotide chains. The RNA is formed by just one polynucleotide chain.
Antibodies of dissimilar specificities, which react to the same antigen, are known as polyclonal antibodies.
Diagnosis History and Physical examination. John's criteria. Echocardiogram show valvular insufficiency. Chest X-ray cardiomegaly if CHF present. EC
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