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Explain Bioluminescence - Ethological Approach in Taxonomy
In those animals which exhibit bioluminescence. The pattern produced by the bioluminescence is used in taxonomy. It has been used, for example, in the identification of sibling species of the fire fly (Photuris).
The study of the frequency, intensity, colour and shape of individual flashes, flash sequences which may be of short or long duration, of constant intensity or may increase or decrease in intensity has made it possible to identify 18 sibling species of Phoiuris instead of just the 3 known before. Since the separation of the species on basis of bioluminescence, other differences have also come to light, in terms or differences in preferred habitat, in the breeding seasons and in body colour.
How does the metachronal waves form in the ciliary row of protozoa ? Explain the cilia beating mechanism associates with it.
Many patients who are weak, fearful or shot of breath find it essential to hold tightly to the handrail while walking. If accurate aerobic information is to be obtained handrail su
If one determines the concentration of cortisol in the blood plasma to be 10 micrograms/mL and that in a 24 hour period a person excretes 10 mgs of cortisol, calculate the volume o
Haploid Production The higher plants are normally diploid, with two sets of chromosomes in their somatic cells. Their haploids (with one set of chromosomes) arise in nature by
Fire and Cookery : Fire and Cookery where and when fiie came to be used is not known. Fire, to start with, must have been a frightening thing, giving rise to many myths and l
Coronary Arteries The right coronary artery originates form the right aortic valvular cusp, its, SA nodal branch supplies the SA node and AV nodal branch supply the AV nod
Factors affecting the process of deep fat frying. The common factors influencing the process of deep frying include: 1. Heat- Frying temperatures ranging from 150 -190°C
Define about the Micro Minerals? Micro minerals are those minerals, which comprise less than 0.01% of the total body weight and are required in concentrations of one part per m
working of pcr
Explain Cooperative behaviours of social animal group Group living, specialist roles, eg bees, ants Altruism, eg social insects, meerkats Group defence, eg social
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