Correct answer: A). The current hypothesis of the evolutionary relationships between organisms
The tree of life is a metaphor that expresses the idea that how life is related to ancestors. Charles Darwin first uses this in the modern biology. It is an evolutionary tree that depicts the relationship between various biological entity. It holds the data that are collected from RNA, DNA and protein analysis. It shows the current hypothesis about the evolutionary relationship among the taxa.
Hence, the correct answer would be option A.
Ribose is a simple sugar at the center of adenosine triphosphate (ATP). It's the same sugar that makes up RNA.
<span>Mosses is a simple type of green plant which does not have vascular tissue in its leaves or stems, but they have simple form of roots called rhizoids that anchored them in place. Mosses are found in moist areas and grow on forest floors by spreading out appearing as a sort of living carpet. </span>
It is b. If I am wrong I am sorry
Answer:
Pericardial sac has protective tole
Explanation:
Pericardial sac or pericardium is a fibrous tissue that surrounds the heart. It has two coats:
- the outter coat-parietal pericardium
- the inner coat-visceral pericardium or epicardium which is double-layered and contains pericardial fluid between those two layers (pericardial fluid is necessary as a lubricant for the heart movement).
Besides lubrication, percardium also protects heart from infections, fixes it and limits its movements.