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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.
What is Soil Horizons In a profile, different horizons or layers are identified by certain designations assigned after comparison of the properties of the layer with those o
Tracheae - Respiration Insects that have successfully colonised the terrestrial environment have evolved a respiratory system very different from other land animals - the trac
Q. What do you mean by Oesophagitis? We already know that oesophagus is a muscular tube 25 cm in length and basically helps in transporting the food from the mouth to stomach,
A solid compound was found to contain 42.11% C, 51.46%O and 6.43% H by weight. The molecular weight of the compound was 341. What is the molecular formula of the compound?
Explain the Cost Utility Analysis? Cost utility analysis: Cost utility analysis provides for measurement of health outcomes for a given cost. The health outcomes are measured q
Companion cells are the specialized cells in the phloem which load sugars into the sieve elements and help to maintain a functional plasma membrane in the sieve elements.
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Based on your reading of the article "Origin of Life on Earth" which of the following is a false statement regarding how life developed? A. As proteins are needed for the repli
Q. What is the morphological characteristic that evolutionarily approximates the beings of the phylum Annelida to arthropods? The metameric feature that is the body segmentatio
Define essentiality of Sulphur for growth of micro-organism? Sulphur is a part of some amino acids, some carbohydrates, biotin and thiamine. It is obtained either as elemental
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