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Q. Which respiratory adaptations or organs do aquatic and terrestrial arthropods respectively present?
In crustaceans, typical aquatic beings, there are richly vascularized gills that permit gas exchange and make contact with water. In terrestrial insects the respiration is gases and tracheal flow inside small tubes that connect the animal external surface and ramify to cells and tissues without the participation of blood. In arachnids, besides the tracheal respiration, book lungs (thin folds resembling leaves in a book) may as well exist.
Evolution of vertebrates and invertebrates nervous system
Q. Describe Palynological Evidence? Palynology is the study of pollen and spores. The taxonomic characters of pollen grains include wall structure, polarity, symmetry, shape an
Q. Fibre requirement in chronic diarrhoea? Fibre: Insoluble fibre in the form of skins, seeds and structural plant materials should be strictly avoided to minimize on the irrit
Polyembryony Presence of more than one embryo in a seed is termed polyembryony. The phenomenon, first discovered in orange seeds by Leeuwenhoek (1719), attracted considerable
Q Annelid Identity card. How are they characterized according to examples of representing beings, type of symmetry, basic morphology, germ layers and coelom, respiratory system, di
Roller Pump: This is the type most commonly used in clinical perfusion. It has a circular metal housing inside which there is a rotating urn with two rollers fixed at 180 degrees
steps involved in glycolysis
Tongue grafting Top of the stock is cut diagonally and in an upward direction. Scion is cut diagonally in downward direction. A second cut is given from above downwards,
Cell Determination Cell determination is a process through which portions of embryonic genome are selected for expression in particular embryonic cells. Determination to follo
If three different traits are controlled by the unlinked genes A, B, and C, and each has multiple alleles so that A has 4 alleles, B has 6 alleles and C has 2 alleles, how many dif
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