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Q. Show the Embryological Evidence?
Embryology is the study of the successive stages of sporogencsis , gametogenesis and the growth and development of the embryo. The number of nuclei in the pollen grains at the time of pollen dispersal is either two or three. Double fertilisation is an example of embryological unity throughout the angiosperms. Based on the number of cotyledons, monocotyledons are separated from dicotyledons. The binucleate pollen is derived. Embryology has had systematic significance in the grass family, where with several other characters it has been used to revise the family's classification. In animals the embryological evidence is of great significance, e.g. the Anopheles maculipennis complex is broken into a number of sibling species on the basis of their egg structure. In Dacus oleae and ceratitis capitata.(fruit flies) the whole eggs are separated on the basis of the character of anterior pole and the whole classification of white flies is primarily based on the structure of their pupae.
Q. What is the lasting form in the gametophyte, pteridophytes or the sporophyte? How can it be compared to bryophytes? The lasting form in pteridophytes is the diploid (2n) spo
Ammonification Many heterotrophic bacteria actinomycetes and fungi in soil and water metabolise the organic nitrogen and release it in an inorganic form as ammonia. This proce
Concerning permeability what type of membrane is the cell membrane? The cell membrane is a selectively permeable membrane, i.e., it permits the passage of water and some select
Q. How Occlusal load affect osseointegration? Overloading the recognizing bone tissue prematurely will cause failure of osseointegration. A two stage surgery is advised routine
Define Immediate and Longer term Adjustment to Altitude Hypoxia? Arterial hypoxia precipitates the immediate physiological adjustments to altitude and process of acclimatizatio
the model
Explain how salivary amylase works on foods like crackers
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Shapes: Nightingale Ward In the 1940s, this traditional nursing unit was based on the long rectangle pavilion type ward and self-contained unit. This concept is establis
Main Components of Blood Plasma You would recall the various types of cells found in blood. The composition of human blood plasma is given in Table. The very structure of bloo
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