What Species Richness-Productivity Relationship Has the Park Grass Experiment in England

question 10

Multiple Choice

What species richness-productivity relationship has the Park Grass Experiment in England demonstrated over the past 150 years?

• A) U-shaped
• B) negative
• C) none
• D) positive
• E) hump-shaped

---

Definitions:

Synaptic Knob

The terminal button of a neuron that contains neurotransmitters and is involved in the transmission of signals to another neuron.

Receptor Sites

Three-dimensional proteins on the surface of the dendrites or certain cells of the muscles and glands, which are shaped to fit only certain neurotransmitters.

Resting Potential

The difference in electric charge between the inside and outside of a resting neuron's plasma membrane, critical for nerve impulse transmission.

Synapse

A synapse is the junction between two neurons or between a neuron and a muscle, where electrical or chemical signals are transmitted.