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How is the respiratory system of beings of the phylum Annelida characterized?
Respiration in annelids can be cutaneous or branchial. Cutaneous respiration happens due to the rich vascularity under the epidermis. The gills, present in aquatic annelids, are located in the parapodia (false claws) that have an extensive capillary net.
in what form is most carbohydrates is taken in normal diet
Why is the occurrence of eyelids in amphibians in comparison to their absence in fishes and adaptation to terrestrial life? Eyelids associated to lacrimal glands protect and ke
Meiosis is the special type of cell division in which the numbers of chromosomes in daughter cell are reduced to half, as compared to parent cell. Occurrence: It takes place
Whenever a pair of alleles has different alleles is there dominance between them? Not in all cases of a gene having two different alleles is the dominance complete. There are g
applications of diffusion
What is the difference between the concepts of food chain and food web? The chain method is a theoretical model to study the energy flux in ecosystems. Actually in an ecosystem
SUPERNUMERARY OR ACCESSORY CHROMOSOMES Wilson (1905) discovered them in Matapodium insect. Very small Chromosomes present in nucleus in addition to normal number of Chr
Which terrestrial vertebrate group is extremely rare in deserts? Amphibians are terrestrial vertebrates extremely rare in desert environments (although there are a some species
ORGNELS WITH SINGLE WALL
Why Water is a essential nutrient for life? In this unit, we learnt that water in spite of being ignored, is an essential nutrient required for life. Though the content of tota
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