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Signify the term - Trachea
Part of the respiratory system in insects, vertebrates and some spiders. In invertebrates it comprise tubules carrying air directly from outside to the tissues. In vertebrates trachea are tubes moving air to the lungs.
A red blood cell has an internal salt concentration of 150mM. The cell is placed in a beaker of 500mM salt. (a) Assuming that the cell membrane is permeable to water but not to
How do plants solve the problem of transporting substances throughout their tissues? In bryophytes the substance transport is completed by diffusion. In tracheophytes (pteridop
Explain Nutritional Requirements of Microbes? Microorganisms require various nutrients and physical factors for their existence and growth. Nutrients are substances used in bio
Define Water - Important Nutrient? Macronutrients, you know, are those nutrients which are required in large amounts by our body namely, carbohydrates, fats and proteins. We st
Name and describe any three adaptations of mangroves to the conditions prevailing in the Sunderbans.
Q. In which period of meiosis does the pairing of homologous chromosomes occur? The pairing of homologous chromosomes is a very important step for meiosis because the rightness
What are the structures that form the external ear? What is its function? The internal ear comprises the pinna, or auricle, and the auditory canal. Its function is to conduct t
PHYSIOLOGY AND BIOCHEMISTRY - Ample and concrete evidence of organic evolution are obtained from the functional activity and chemical composition of animals. J.B.S. Hald
Q. What is the difference between translation and transcription? Transcription is the name given to the formation of DNA molecules from an open DNA chain used as a template, Tr
Q. How is the extracorporeal digestion associated to predation in arachnids? Arachnids can inoculate poison to kill or paralyze their preys using structures called chelicerae.
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