Nematocysts are expelled when the
A) osmotic pressure reaches 140 atmospheres.
B) hydrostatic pressure exceeds the osmotic pressure.
C) internal hydrostatic pressure increases when water enters.
D) cnidocil stimulates the cnidocyte to decrease hydrostatic pressure and increase osmotic pressure.
E) None of the choices are correct

Question

Quizplus · Accepted Answer

Nematocysts are expelled when the internal hydrostatic pressure increases as water enters the cnidocyte, causing the nematocyst to discharge.

Nematocysts Are Expelled When the