Both flagella and cilia have a common structural arrangement of microtubules referred to as "9 + 2 array." A single cilium or flagellum is made up of string of nine microtubule doublets that surround a single microtubule doublet in the center.
Flagella are hair-like structures which are usually long and they extend from the plasma membrane. They are used to propel or move an entire cell, for example sperm cell.
Cilia are short hair-like structures that are used to move entire cells. An example is paramecia. Cilia can also be found lining the outer surface of cells such as those of the respiratory tract where they move trapped particles up toward the nose and mouth.
thethe real answer would have been no predators if there were predators there will be an increase of the population of the specimens
I think your answer maybe:
Use of Fertilizers
Answer: C. A snake hides under a rock on a hot day.
Explanation:
Thirst, hunger, and pathogens are internal issues (meaning inside of the body). Weather (heat) is something from the external environment that the snake is responding to (hiding). Therefore, the correct option is C.
Let me know if you have any questions!
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<em>Question: Which behavior is a response to an external stimulus?</em>
<em>A. A dog drinks to quench its thirst.</em>
<em>B. A squirrel eats when it is hungry.</em>
<em>C. A snake hides under a rock on a hot day.</em>
<em>D. A cat vomits to rid itself of pathogens.</em>
Answer:
Lysosomes will release digestive enzymes into the cytosol.
Explanation: hope it helps <3 if not just say the answers givin and i will answer