Answer:
sympathetic nervous system
Explanation:
The sympathetic nervous system is part of the autonomous nervous system which controls the involuntary body functions as heart rate, breath rate, perspiration etc. The sympathetic nervous system is specifically responsible for the increase in the function of body functions when the body perceives a threat. When faced with a threat or distress, the sympathetic nervous system initiates physiological reactions known as the “fight or flight” response, thereby increasing the body’s alertness to such threat. Examples of increased body functions or “fight or flight response” include increased perspiration and increased heart rate, as exhibited by Blair.
That is to protect Cell from external Harsh Environment
Hope this helps!
Because only the chromosomes can be seen in a karyotype, and microdeletions or insertions are mutations at the molecular level, it is virtually impossible to detect such mutations at the chromosomal level.
The arrangement of the pattern of the veins on the leaf is referred as the venation of the leaf.
The monocots and the dicots exhibit different venation pattern. The monocots generally exhibit the parallel venation pattern. While, the dicots represent reticulated venation.
This difference is present due to the presence of number of cotyledons in the seed.
Hey there Lancel3760,
Answer:
The advantage is that, they can see equally well in water and above water. For example, that animal can spot its predator above water and hide fast. And it also helps the animal to see above and under water during the day and night.
Hope this helps :D
<em>~Top</em>
