Which Structures Were Required for the Evolution of the Ferns

question 42

Multiple Choice

Which structures were required for the evolution of the ferns and gymnosperms?

• A) seeds and flowers
• B) megaphylls and seeds
• C) microphylls and megaphylls
• D) flowers and vascular tissue
• E) megaphylls and vascular tissue

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Definitions:

Myelin

Myelin is a fatty substance that forms a sheath around the axons of neurons, facilitating faster transmission of electrical impulses along the nerve cells.

Axon

A lengthy, slim part of a nerve cell, known as a neuron, that typically moves electrical impulses from the neuron's core body.

Impulses

Sudden, involuntary urges to perform an action or a series of actions without conscious thought.

Glial Cell

Non-neuronal cells in the nervous system that support, protect, and nourish neurons.