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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.
Coniferous forest - Ecosystem Cold regions with high rainfall and strongly seasonal climates with long winters and fairly short summers are characterised by boreal coniferous
The fact that some pure solutions of hydrocarbons do not readily evaporate at room temperature is a result of- Select one: a. London dispersion forces. b. The hydrophobic
Homo sapiens first appeared in the fossil record between 200,000 to 300,000 years ago, The fossils were the Swanscomb man from England and Steinheim man from Germany. a) The Swa
Classes of Life Form The five life form classes are: Phanerophytes, Chamaephytes, Hemicryptophytes, Cryptophytes, and Therophytes.
The scientist who described cells as “many little boxes” was
Explain Keshan disease caused by Selenium deficiency? It is a cardiomyopathy (disease of the myocardium, involving heart muscle) that was identified to affect children and wome
Explain the Prevalence of Iodine Deficiency Disorders? We can determine the prevalence of IDD by conducting population surveys. Most of the population surveys are based on clin
Q. Which is the first (human) heart chamber into which blood enters? Where does the blood go after passing that chamber? What is the name of the valve that separates the compartmen
Diagnosis Chest X-ray, Sputum Cytology Test Fibro Optic Bronchoscopy and Biopsy In later stage of disease - weight loss, Debility indicating metastasis Staging of
It is immune difficult mediated hypersensitivity. Typical manifestations contain rheumatoid arthritis, serum sickness, necrotizing etc.
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