The answer is true cause the movement of water and small particles through a membrane due to hydrostatic pressure, from high pressure to low pressure.
Exoskeleton
Exoskeleton is a evolutionary innovation. This is operated by muscles attached to it and acts as an armor. Other than support this is an adaptive mechanism to provide protection against predators. In vertebrates, it is considered as the dermal bone that developed via membranous ossification. Fishes retained their exoskeleton in the form of their scales. However, in some organisms terrestrial evolution allows the loss of exoskeleton and formed a more mobile endoskeleton,
The correct answer is: the " phospholipid bilayer " .
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→ { which is hydrophobic (water-repellent) due to its waxy-like composition of many lipids.}.
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Hope this helps you!
Best wishes!
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