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Q. How many cellular nuclei does the pollen tube of angiosperms have? What is ploidy of each of these nuclei?
The pollen tube explicitly the mature male gametophyte of angiosperms has three cellular nuclei: one tube cell nucleus and two sperm nuclei.
All those nuclei are the part of the male gametophyte of the plant and thus each of them is haploid (n).
PITUITARY DISORDERS - (a) Pituitary Dwarfism . It is caused by the deficiency of growth hormones (GH) from childhood. It is characterised by small but well porportioned body a
what Photoperiodism
What is the part of the female reproductive system where fecundation occurs? Fecundation generally happens in the Fallopian tubes but it can also take place within the uterus.
Q. What is the importance of pre procedural rinse? Patients' use of an anti-microbial mouthwash of 0.12% chlorhexidine gluconate solution for 30 seconds prior to intra-oral pro
Hexokinase, that catalyzes the first irreversible step of glycolysis, is inhibited by glucose 6-phosphate. Thus when PFK is inhibited and fructose 6-phosphate builds up an
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Define Physical activity as a factor for obesity? Sedentary life style with lack of an exercise schedule tends to make one obese. As we approach middle age, our physical activi
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Guar Gum Guar Gum is derived from seed of legume Cyamopsis tetragonalobus resembling soyabean plant. Guar gum is composed of Galactomannan Galactose: mannose in the ratio 1:2.
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