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Explain the Precautions for Use of Light Microscope?
1. Clean the lens system properly.
2. Use xylol only when necessary.
3. Never lower the body tube while looking through the ocular lens.
4. Use only a drop of immersion oil for oil immersion lens.
5. Focus the slide first at low-power lens using coarse adjustment knob. Then change to other lens in position and focusing should be done only with fine adjustment knob.
6. High power objective lens should not touch the oil drop on slide.
Q. Under which form is nitrogen fixed by living beings? The Most living beings can't use molecular nitrogen to obtain nitrogen atoms. The Producers fix nitrogen primarily from
Epilimnion - Summer Stratification This forms the upper layer of the lake and consists of freely- circulating warm water which is well lighted though poor in nutrients. Most o
describe the different types of genomes that viruses can have
Q. How are gases exchanged in sponges? The gas exchange in sponges happens by diffusion from the exterior to the cells that absorb molecular oxygen and liberate carbon dioxide.
Coevolutionary relationships between parasites and their hosts can be more complicated than between predators and their prey. As in the case of prey-predator relationship, one can
Name three characteristics of mitochondria and chloroplasts that support the endosymbiotic hypothesis of eukaryotic evolution. Both organelles replicate independently of the ce
Explain the Interaction of Riboflavin with other Nutrients? Riboflavin, as already discussed under the functions, interrelates with other B vitamins, notably niacin, which r
Blastulation explain
SEXUA L REPRODUCTION 1 . Amphigony - Zygote is formed. (i) Syngamy Fusion of gametes. (a) Endogamy - It involves self fertilisation. e.g.
Define Calcium - The Macronutrient? Calcium is an important mineral found mainly in bone and teeth. It is widely distributed in food substances such as milk, cheese, egg yolk,
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