<u>Answer:</u>
<em>Double fertilization is a significant feature in angiosperms or flowering plants.
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<u>Explanation:</u>
The pollen grains carrying the sperm cells from a flower land on the stigma which is a <em>component of the female reproductive part of a flower.</em> The pollen grain contains the sperms and once the pollen lands on the stigma it grows pollen tub into the ovary through the style which is a tube connecting<em> stigma to ovary. </em>
Ovary contains ovule which contains egg cell as well as two polar nuclei and all these are haploid. The sperm in the pollen is also haploid. On the release of two sperm cells, one sperm fuses with the egg cell and the other sperm fuses with the two polar nuclei which results in the <em>formation of a diploid zygote</em> which is diploid and a triploid cell.
The diploid zygote develops into the embryo after cell division and the triploid cell develops into endosperm that provides nourishment to the embryo. Thus double fertilization becomes <em>significant in flowering plants.
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Answer: Swimming
Explanation:
The swimming motility is one of the type of bacterial movement. This bacterial movement is mediated by the rotating flagella. It takes place when the individual cells move in the liquid environment.
The phase contrast microscope is used to the enhance the contrast of the images formed by the ordinary light microscope. This can be used for observing the transparent and colorless specimens. The phase contrast microscope enables the visualization of the cells and their organelles that would be difficult to observe under the ordinary light microscope.
The phase contrast microscope can also help in observing the swimming motility of the bacteria. This can be used to observe the change in directions of the bacilli under microscope.
Answer:
The correct answer is option <u>C. Cold temps bring higher pressure.</u>
Explanation:
Scientifically, cold temperatures will create high air pressure due to the concentration and greater density found in molecules. Just like warmer temperatures will bring lower pressure.
Hope I could help!
Trace metals, like iron and magnesium, are considered _Building blocks of molecule__________________, while organic compounds, like vitamins, are considered________Complex Molecule___________
Answer:
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Explanation:
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