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explain about the terms - bursae and captaculapaired water-filled sac located at base of each arm of a brittle star cilia in bursae circulate water
what do you mean by branchial basketin ascidian adults the pharynx is enlarged to form branchial basket pharyngeal openings in wall of the basket
state the terms - blastocoel and blastoporeduring the development of embryo single cells divide and form a hollow ball of cells one cell layer thick
determine the uses of potassiumwater soluble and exchangeable potassium is readily available to plants this is extracted with morgan reagent 10
what is biogenetic law and define bilateral symmetryin brief ontogeny recapitulates phylogeny or developmental or embryological sequence of an animal
name the methods for extracting phosphorousphosphorusphosphate - phosphorous is estimated as phosphate some methods for extracting phosphorous are as
what is the significance of axial skeletonthe bones which make up skeleton of the main body axis of vertebrates it comprise the cranium vertebral
determine the term - nitrogen most of nitrogen is available as organic nitrogen which has to be mineralised to inorganic form to become available to
what do you determine by atrioporethe external opening to atrium in cephalochordates water passes across pharyngeal slits into atrium and from there
signify asexual and how it is formedorganisms which do not reproduce by recombination of genetic material contained in gametes there is not any
state the term in brief -asconoid spongeof the three different sponge architectures it is the simplest it comrpsies a central choanocyte lined
chemical methods of estimating available nutrients water soluble forms of nutrients are available to plants but forms other than water soluble may
state the variety of chemical and biological reactionsvariety of chemical and biological reactions takes place leading to the formation of the
determine about the term - heterogeneous mixturethe solid phase made up of soil and other source material for nutrients is a heterogeneous mixture
availability of nutrients in soils the productivity of a crop depends largely on the nutrients discussed in the previous section it is important
determine the term - chlorine the application of chlorides results in leaves of greater spread a lighter green colour and with a smoother surface
state the term - molybdenum molybdenum is intimately related to nitrogen metabolism of plants it is part of the nitrate reductase system which
determine about the term - copper copper is known to act as an electron carrier in enzymes which bring about oxidation - reduction and regulates
state in brief about the zinc it is concerned with the functioning of sulphydryl compounds such as cysteine in regulation of redox potential
determine about the manganese manganese performs some functions in photosynthesis and acts to regulate the intake of certain elements and
what do you understand by arthropodizationmany of the traits that we consider unique to the arthropoda may not be independent traits instead they may
define the term archenteronthe name given to the primitive gut the first tube that runs through the developing embryo and is open to the external
define the term ancestral characteristic a character shared by all members of a taxonomic group of organisms taxon and used to define the unique
determine the term anapsid the type of skull found in reptiles and seen today only in turtles behind the opening of the orbits the skull is solid and
signify the term - analogy analogousrefers to structures that do not have the same evolutionary origin but have the same functions the wings of a bat