A region of separation that forms near the base of the leaf's petiole when the leaf is shed is the
A. endosperm.
B. abscission zone.
C. Casparian strip.
D. pericycle.
E. statolith.
B. abscission zone.
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After correcting for the noted deletion in slots 62-64, it becomes clear that mutations in the ________ triplet have the most effects on changes in phenotype
Fill in the blank(s) with correct word
The fact that every organism continuously exchanges chemicals and energy with its surroundings indicates that organisms ________
A) are open systems B) are closed systems C) have tightly controlled thermoregulation D) osmoregulate
Viruses that attack bacteria are called
A. lytic B. proviruses C. virulent D. phages
The presence of thylakoids, phycocyanin, gas inclusions, and cysts would be associated with
A. spirochetes. B. archaea. C. cyanobacteria. D. purple sulfur bacteria. E. green sulfur bacteria.