The Soils of Tropical Forests Are Typically Thin and Low

question 15

Essay

The soils of tropical forests are typically thin and low in plant nutrients.Yet tropical forests are some of the most productive and diverse ecosystems on the planet.How can you explain this paradox?

Recognize the adaptations of plants to terrestrial life, including vascular tissue and leaf evolution.

Describe the role of specific plant groups in the history of Earth, such as their contribution to coal deposits.

Understand the impact of structural and reproductive adaptations on plant diversity and evolution.

Identify the structures characteristic of vascular plants and their significance.

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Definitions:

Knob-like Terminals

The expanded areas at the end of axons that are responsible for releasing neurotransmitters into the synapse.

Action Potential

A rapid change in electrical charge across a neuron's cell membrane, allowing for the transmission of nerve impulses.

Excitatory Signals

These are biochemical impulses that promote or increase neural activity or the firing of neurons.

All-or-none Response

A biological principle indicating that a nerve or muscle fiber reacts completely or not at all to a stimulus.