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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.
Four Distinct Phases of Demographic Transition Demographic transition takes place in four distinct phases. 1. Re-industrial stage in which harsh living conditions lead to
excretory organs of different animals from protozoa to mammals
What is Specific defence mechanism Specific: These relate to specialized cells located throughout the body which respond to invasion of foreign materials/microorganisms su
What is Thermoregulation in Cold? Heat production parallels the increase in O 2 uptake, the magnitude of which depends on the muscle mass .engaged in slivering or work and the
Q. What are the factors Affecting Taste Quality? You may have experienced that the four primary tastes i.e., sweet, sour, salty and bitter are not sensed with an equal ease. Th
Contact Osteogenesis: In this the osteogenic cells attach to the implant surface and the new (de novo) bone is formed on the implant surface first. The developing bone matrix can d
Explain Problems of Infants and Preschoolers Nutrition? In spite of all nutrition interventions, there are some of the common yet life threatening problems which need to be loo
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Define why the Virginia opossum is considered a generalist and the koala is considered a specialist. The opossum feeds on almost anything, whereas the koala feeds only on the l
Which statement best describes the acid/base properties of guanine? -at pH, guanine will be negatively charge -at pH, guanine will be neutral -it will be an effective buff
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