C. atomic number is the answer
<span>When an atom loses or gains electrons, it becomes an ion.
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Answer:
Parenchyma, Collenchyma, Sclerenchyma, Vascular tissues
Explanation:
The tissue that helps in the sideways conduction of water in the tree is the xylem parenchyma.
In plants, there are two systems; the xylem and phloem, that help in the transportation of water and other substances from roots to the other parts of the plant.
Xylem is living plant cells and is found in the center of the vascular sheaths. These are also known as photosynthetic cells.
It is also an essential component of the plant as it stores and transports water.
Moreover, these cells serve as fragments of the intracellular storage system.
If you need to learn more about the xylem parenchyma click here:
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The answer is D, white blood cells.
The main function of white blood cells is to defense the body from bacteria or other pathogens. There's 2 main kinds of white blood cells, lymphocytes and phagocytes. Lymphocytes mainly produce antibodies that can kill bacteria or any pathogens, and phagocytes can ingest the pathogens directly.
Therefore, since the white blood cells can protect our body, they're part of our immune system.
