Answer:
A
Explanation:
osmosis
Sunny's poster has a couple of errors in the direction of the arrows. The correct directions of the arrows should be:
The correct order of the levels of organization in the human body is:
Therefore, arrow A should point to the tissue (a group of cells that perform a specific function), arrow B should point to the organ (a structure made up of tissues that work together to perform a specific function), and arrow C should point to the organ system (a group of organs that work together to perform a specific function). By correcting the directions of the arrows, Sunny's poster will accurately represent the levels of organization in the human body.
To learn more about levels of organization in the human body, here
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fertilization
conjugation
pollination
Answer:
Fertilization
Explanation:
hp this helps!
Hello. This question is incomplete. The full question is:
"Examination of slide will show that a few nuclei do not appear next to a cell wall in onion cell. Could you explain that observation?"
Answer:
You are visualizing the onion cell during mitosis interphase. At that time, cells may have multiple nuclei and some of them may not be visible near the cell wall.
Explanation:
Experiments with onion roots are common when we want to visualize the phases of the cell cycle or to visualize chromosomes and cell nuclei.
If after the experiment with an onion cell you are unable to visualize the cell nuclei near the cell wall, it means that you are visualizing the cells during the interphase of mitosis. At that time, cells may have multiple nuclei and some of them may not be seen near the cell wall.
The onion root tips are very famous for observing the distinct phases of mitosis as the chromosomes are very large and get very dark when stained.
The epidermal cells in the onion take place cell division (cytokinesis) and mitosis (nuclear division). The interphase cell usually possesses one or number of nuclei, thus, a few nuclei are not witnessed adjacent to a cell wall.