Multiple Choice
Nematocysts are expelled when
A) the osmotic pressure reaches 140 atmospheres.
B) the hydrostatic pressure exceeds the osmotic pressure.
C) the internal hydrostatic pressure increases when water enters due to osmotic pressure inside.
D) the cnidocil stimulates the cnidocyte to decrease hydrostatic pressure and increase osmotic pressure.
Correct Answer:

Verified
Correct Answer:
Verified
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