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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.
While waiting at an airport , nail Campbell once overheard this claim, its paranoid and ignorant to worry about industry or agriculture contaminating the environment with chemical
Q. Can you explain Shellfish Poisoning? Shellfish like oysters, mussels and clams are generally bred in the sewage polluted beds or brackish water. The shellfish poisoni
How mathematics and statistics related to Biology? This report emphasizes the benefits that the fields of mathematics and statistics can bring to biology, but there are recipro
What is meant by binomial nomenclature and what are its basic rules? Scientific nomenclature of a species must have, at least, two names: one that classifies it as genus and th
Q. What is the excitation threshold of a neuron? How does this threshold relate to the "all-or-nothing" rule of the neural transmission? The excitation threshold of a neuron is
There is no splitting of the centromere. The kinetochore fibers contract and the spindle or pole fibers elongate , As a result homologous chromosomes of each pair rather than
Q. Class Reptilia identity card. How are they characterized according to examples of representing beings, basic morphology, skin, respiration, circulation, nitrogen waste, thermal
how the blood is circulated with the help of heart
Collenchyma are one of the three major cell types in the plants; are elongated and have thicker walls than parenchyma cells and are usually arranged in strands; gives support and
Explain about chthalamus The realised niche of Chthalamus is reduced from its fundamental niche and it is limited to the upper tidal zone Lower limits Out-competed
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