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Q. Show the Natural selection of taxonomist?
Natural selection associated with successful reproduction maintains a basic similarity of the reproductive feature of flowers, fruits and seeds within the various species, genera and families. We have already discussed these concepts in Unit 5. This general constancy makes the structures ideal for charactensing taxonomic groups. You should know {hat floral feature of a plant are fundamental in defining natural groups, because of being more constant than vegetative features. Dicots have tetramerous and pentamerous flowers, while monocots have trimerous flowers. Reproductive characters are numerous and provide more features to differentiate taxa. Modifications in floral morphology can be related to the mode of pollination or specialised reproduction. Wind pollinated taxa frequently have unisexual reduced flowers that are individually inconspicuous. Corollacolor, pollinator guides and structure of floral whorls, stamen number, another position, ovary position, number of carpels, number and position of perianth parts, type of inflorescence and fruit and seed type contribute to the reproductive features of the plants. The mature fruits of the mustard species (Cruciferae) and carrot species and their relatives (umbelliferae) have diagnostic character. In. cruciferae the fruit is silique or silicle and in umbelliferae the fruit is a Schizocarp.These families should include mature fruits to insure identification. Similarly flower type and fruit are important in the classification of the Rosa species (Rosaceae). The flowers are usually actinomorhic e, rigynous to epigynous and fruit are fleshy pome. The carollas and stamens of the figworts (Scrophulariaceae) provide much information for classification at various taxonomic ranks within the family. The corolla consists of bilabiate 4-5 connate petals and androecium commonly of 4 didynamous epipetalous stamens that are alternate with the lobes.
P u l l orum disease (bacillary white diarrhea) This disease is caused by poultry-adapted strain of Salmonella genus- Salmonella Pullorum and considered an important hatc
Classification with its Justification Kingdom Animalia Animals, multi-cellular organisms with cells that lack a cell wall, many capable of movement or movement of some o
Q. How to calculate Fractional Shbrtening? With the cursor- beam cutting the left ventricle just beyond the tips of mitral valve in an adequate parasternal long axis view,
Q. What do you mean by Punch cards? Punch cards are used when the number of taxa to be keyed out is large. In this type of cards the holes at numbers corresponding to a charact
Exchange transfusion An exchange transfusion is the serial withdrawal and injection of small amounts of blood through a central vein-usually umbilical until the required volu
why can only one kind of cellulose be formed?
SPINAL NERVES 31 Pairs. Mixed type. Total weight 150 gms. At the base of origin of spinal nerves gland of swammardon or calcarious ganglion is present. Composed of m
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Define Methodology for Half and Full Saturation Test? 1. Take 5 ml each of starch and dextrin solutions, add 5 ml of saturated solution of ammonium sulfate. Shake thoroughly an
Post-operative pain There is some discomfort for about 24-48 hours. Persistent pain for a longer duration, with swelling, may indicate possible infection around the implant an
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