Which of the following represents the order in which the four major groups of plants evolved, from the most ancient to the most recent origin?
A. bryophytes, seedless vascular plants, gymnosperms, angiosperms
B. seedless vascular plants, gymnosperms, bryophytes, angiosperms
C. angiosperms, gymnosperms, bryophytes, seedless vascular plants
D. gymnosperms, bryophytes, seedless vascular plants, angiosperms
Ans: A. bryophytes, seedless vascular plants, gymnosperms, angiosperms
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Detection and response to environmental cues or stimuli are primarily functions of
a. metabolism. b. the nervous system. c. catabolism. d. the endocrine system. e. thermodynamics.
In amphibians, a pigmented area called the ____ appears after fertilization
a. gray matter b. gray crescent c. blastomere d. cleavage plane e. gray oocyte
Which of the following has been correlated
with the ability of rats to cope with stress as adults? a. A nurturing mother. b. The number of siblings they have. c. The temperature they are raised in. d. The altitude they are born at. e. All of these.
What molecule is the body’s main energy source?
a. oxygen b. carbon dioxide c. glucose d. fats e. proteins