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Q. How do fishes do gas exchange?
Fishes "breath" through gills, branchiae or Gills, are highly vascularized organs specialized in gas exchange under water and present in aquatic animals (crustaceans, marine annelids, tadpoles and fishes). Gills are a respiratory organ (analogous, for instance, to lungs) containing very thin lamellae with many apparent blood vessels in direct contact with water.
In osteichthyes the gills are covered by a bony flap that protects them called as operculum, in chondrichthyes there are no opercula.
Reed-Swamp Stage - Hydrarch This stage is also known as amphibious stage, as the plants of the community are rooted but most parts of their shoots remain exposed to air. Speci
what is the excreatory organ of silverfish?
Q. What is the structure into which the follicle is transformed after ovulation? What is the importance of that structure in the menstrual cycle? The follicle that released the
taxonomy research cat
Standards of Psychiatric Nursing: By 1956, the Masters programme was extended to two academic years. Some nurses established private practices with psychiatric patients. It
Classification
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Rainfall is high, sometimes higher than tropical rain forests but seasonal. There are pronounced wet and dry periods, and so are winter and summer seasons. The soils are brown in c
What are the alleles of a gene? The Diploid individuals have paired chromosomes. For instance in humans there are 23 pairs of chromosomes totaling 46 chromosomes. Every pair co
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