According to Figure 5

question 39

Multiple Choice

According to Figure 5.5,which of the following statements is accurate about the perennial Sparaxis grandiflora found in South Africa?

• A) In January all nitrogen is being supplied to parts of the plant associated with reproduction
• B) Leaves and roots receive approximately the same amounts of nitrogen
• C) Fruit receive a small proportion of the cumulative nitrogen a plant uses
• D) In summer, leaves receive a greater proportion of nitrogen than the daughter corm.

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Definitions:

Spatial Summation

The process by which multiple synaptic inputs from different locations on the same neuron combine to influence the firing rate or activity of the neuron.

Dendrites

The branched projections of a neuron that act to conduct the electrochemical stimulation received from other neural cells to the cell body.

Back Propagation

Reverse movement of an action potential into the soma and dendritic field of a neuron; postulated to play a role in plastic changes that underlie learning.

Action Potential

A temporary reversal of an electric polarization of the membrane of a nerve cell or muscle cell, allowing for the transmission of signals.