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Slight or no Metamorphosis
In primitive wingless insects (Apterygota) such as spring tails, silver fish etc. and in secondarily apterous insects the young ones which hatch from the egg are essentially identical to imago, differing from it only in size, immature reproductive organs and external genitalia. It moults several times leading to a gradual raise in size accompanied by the appearance of the external genitalia and maturation of sex-organs. In apterygotes, growth and moulting are seen to carry on even after reproductive maturity. Such development or life cycle is called ametabolous.
Egg -> Young goes through several stadia and moults -> Imago (Adult)
Figure: Ametabolous type of development in Lepisma
Before stem cuttings are planted, the cut end of the stem is often dipped in a hormone powder. What is the point of this? The hormone powder having a plant growth substanc
A cDNA library is made by using the reverse transcriptase of a retrovirus to synthesize cDNA (complementary DNA) copies of the total mRNA from a cell (or perhaps a subfraction
Formation of New Membranes Divisions of the egg or blastomeres raise the total surface area of the two daughter cells to be covered via membrane at every cleavage. The parent
List the four basic points to be kept in mind when advising food exchange. To develop the food exchange list points to keep in mind are: a) Group similar foods in one group.
Define observation or inference for picric acid test? 1. A mahogany red colour will be seen. The mahogany red colour indicates the presence of reducing sugar. All monosaccharid
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Q. Which Of the substances is chromatin made? Chromatin is made of the DNA molecules associated to proteins known as histones.
Open Pulmonary Valvotonzy, I nfundibular Resection and Trans Annular Patch : The pulmonary annulus may be narrow based on pre-operative investigations and on measurement
Once the decision has been made to retain the tooth there are two ways for ttt: • Non surgical retreatment : - guided access to apex via coronal access
What is biotechnology? The Biotechnology is the application of biological knowledge to obtain new techniques, materials and compounds of pharmaceutical, medical, agrarian, indu
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