The 1-Metre Height Attainable by Dawsonia Moss Is at the Upper

question 60

Multiple Choice

The 1-metre height attainable by Dawsonia moss is at the upper end of the size range reached by mosses. What accounts for the relative tallness of Dawsonia?

• A) The cuticle that is found along the ridges of "leaves".
• B) "Leaves" that are more than one cell layer thick.
• C) Reduced size, mass, and persistence of the sporophytes, which allows gametophores to grow taller.
• D) The presence of conducting tissues in the "stem".

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Definitions:

Insufficient Thiamine

A condition resulting from a lack of thiamine (vitamin B1), which can lead to neurological problems and diseases such as beriberi.

Korsakoff's Syndrome

A chronic memory disorder caused by severe deficiency of thiamine (vitamin B1), often linked to alcohol abuse, characterized by memory loss, confabulation, and difficulty acquiring new information.

Insufficient Dopamine

A condition where there is an inadequate level of dopamine in the brain, which can affect mood, movement, and cognition.

Excessive Dopamine

An abnormally high level of dopamine in the brain, which can lead to various disorders, including schizophrenia and addiction.