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Biology 12 Chapter 19 Behaviour - 7
1.
Which of the following are in response to periodic environmental changes?
a) Habituation
b) Heredity
c) Hallucination
d) Biological rhythm
2.
What is the stimulus of biological rhythm?
a) Non-periodic environmental changes
b) Periodic environmental changes
c) Hydrotropism
d) Hibernation
3.
What is the internal mechanism called by which a biological rhythm is maintained?
a) Psychological clock
b) Biochemical clock
c) Physiological clock
d) Biological clock
4.
Which of the following intervals may be shown by biological rhythms?
a) All of these
b) Less than a year
c) Less than a month
d) Less than 24 hours
5.
Which of the following intervals may be shown by biological rhythms?
a) Less than 3 hours
b) Less than 24 hours
c) Less than 4 hours
d) Less than 2 hours
6.
Which of the following intervals may be shown by biological rhythms?
a) Less than a month
b) Less than an hour
c) Less than a second
d) Less than a minute
7.
Which of the following intervals may be shown by biological rhythms?
a) Less than a year
b) Less than a second
c) Less than an hour
d) Less than a minute
8.
What is 24 hour-cycles called that are shown by physiological processes?
a) Circadian rhythms
b) Nocturnal rhythms
c) Diurnal rhythms
d) Crepuscular rhythms
9.
What is 24 hour-cycles called that are shown by physiological processes in all organisms?
a) Diurnal rhythms
b) Crepuscular rhythms
c) Nocturnal rhythms
d) Circadian rhythms
10.
What is 24 hour-cycles called that are shown by physiological processes?
a) Crepuscular rhythms
b) Nocturnal rhythms
c) Diurnal rhythms
d) None of these
11.
What is 24 hour-cycles called that are shown by physiological processes in all organisms?
a) Diurnal rhythms
b) Crepuscular rhythms
c) Nocturnal rhythms
d) None of these
12.
Which of the following changes are due to circadian rhythms?
a) Urine production
b) All of these
c) Blood pressure
d) Body temperature
13.
Which of the following changes are due to circadian rhythms?
a) Wakefulness
b) Hormone secretion
c) All of these
d) Sleepiness
14.
Which of the following changes are due to circadian rhythms?
a) Blood pressure
b) Digestive secretions
c) Levels alertness
d) All of these
15.
What is correct about biological clock?
a) Both are correct
b) None of these
c) Internal mechanism is understood
d) Internal mechanism is not understood
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