The Zosterophyllophyta Differ from the Rhyniophyta in That the Zosterophyllophyta

question 39

Multiple Choice

The Zosterophyllophyta differ from the Rhyniophyta in that the Zosterophyllophyta:

• A)were homosporous.
• B)were not differentiated into roots, stems, and leaves.
• C)had a protostele.
• D)became extinct.
• E)produced lateral sporangia.

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Definitions:

Cognitive Theory

A psychological approach that emphasizes the role of mental processes in understanding behavior, emotions, and thought patterns.

Superego

In psychoanalytic theory, the part of the personality that acts as a moral center, controlling the impulses of the id based on societal norms.

Libido

A term used in psychoanalytic theory to describe the energy of the sexual drive as a component of the life instinct.

Ego

The ego, in psychoanalytic theory, is the part of the personality that mediates between the demands of the id, the superego, and reality, playing a key role in decision making and maintaining one's sense of identity.