Answer:
Kyanite is a major raw material for the mullite used in spark plugs and other refractory porcelains. A clear, deep blue variety is sometimes cut as a gemstone.
Explanation:
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The answer is A: The rough ER has visible ribosomes.
The right answer is B.
Nitrogen fixation is done by decomposers that are prokaryotes (bacteria).
<u>Take the example of legumes.
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The different species of rhizobia bacteria, which are able to infect the roots of legumes (Fabaceae family), are specific to certain host plants. Rhizobium phaseoli infects beans (Phaseolus sp).
Bacteria cause the formation of nodules on the roots by penetrating the root hairs, and transform into larger "bacteroids". The nodules are the seat of a symbiotic activity in which the plant provides the sugars and energy from photosynthesis, and in return benefits from the amino acids that are produced there.
Answer:
As of plants, bioluminescent algae fix carbon dioxide in the presence of sunlight and release oxygen. Further, during this process, they produce light as a part of photosynthesis products. Therefore, the use of bioluminescent algae can reduce anthropogenic carbon dioxide from the environment.
Bioluminescent algae-based lamps are being prepared by scientists to overcome these environmental concerns. Furthermore, these lamps would be used as street lights and reduce energy demands as well (burning of fossil fuels).
