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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.
Define the Role of Riboflavin in Respiratory Chain? Riboflavin catalyzes numerous oxidation-reduction reactions. Conversion of riboflavin to flavin mononucleotide (FMN) and the
Q. To which phase of the plasmodium life cycle do the typical chills and fever of malaria correspond? The typical fever and chills episodes of malaria correspond to the phase w
What is mitosis? What is the importance of mitosis? Mitosis is the process in which one eukaryotic cell separates into two cells identical to the parent cell (generally identic
Extraction of the tooth -In nonstrategic importance -Diseased maxillary second molars with no opposing tooth , or with an opposing tooth in class l or lll occlusion that ar
Although there are differences in interpretation of the evidence, it is generally accepted that human biological evolution has not been a linear progression from one species to the
Q. Causes of reduced Serum HDL levels? Possible causes of reduced Serum HDL levels: - Cigarette smoking - Hypertriglyceridemia - Obesity - Genetic factors - Lack
What is the route of the ingested food from swallowing until the duodenum? Unless reaching the duodenum the food enters the mouth, passes the pharynx, goes down the esophagus a
Body Musculature - Locomotion The layout of the muscle layers surrounding the coelom is necessarily the same in all the major classes of Annelida. The body wall has a layer of
Nucellus - Ovule Enclosed within the integuments lies a homogenous mass of tissue which is termed as the nucellus. This is the tissue in which the female gametophyte differen
Fertilizers and Fertilizer Management Fertilizers, in a broad sense, include all materials that are added to soils to supply certain elements essential to the growth of plants
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