How Have Fruits Contributed to the Success of Angiosperms

question 42

Multiple Choice

How have fruits contributed to the success of angiosperms?

• A) by nourishing the plants that make them
• B) by facilitating dispersal of seeds
• C) by attracting insects to the pollen inside
• D) by producing sperm and eggs inside a protective coat
• E) by producing triploid cells via double fertilization

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Definitions:

Action Potential

A rapid rise and fall in electrical potential across a cell's membrane, enabling the transmission of signals along neurons.

Threshold Level

The minimum level of stimulus intensity required to activate a neuron or to trigger a specific physiological response.

Repolarization Phase

Phase of the action potential in which the membrane potential moves from its maximum degree of depolarization toward the value of the resting membrane potential.

Voltage-gated Ion Channels

Proteins embedded in cell membranes that open or close in response to changes in membrane potential, crucial for the propagation of nerve impulses.