Given below are some examples of biological rhythms in humans: (a) REM and non-REM sleep cycle (b) Menstrual cycle (c) Sleep-wake cycle Which one of the following is a correct […]
Tag: CSIR NET Life Science Previous Year Questions and Solution on Brain
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CSIR NET Life Science Previous Year Questions and Solution on Brain, Behavior and Evolution
How Light Entrainment Works: Factors Influencing Circadian Rhythm Synchronization
In circadian rhythm studies, following may be possible generalizations for the effectiveness of light entrainment to the day/ night cycle: A. Shorter exposures have a greater effect than longer exposures […]
CSIR NET Life Science Previous Year Questions and Solution on Brain, Behavior and Evolution
Zeitgebers and Entrainment: How Environmental Cues Reset Biological Rhythms
An animal was first maintained in a constant environmental condition for several days until a consistent biological rhythm (B) was established. The animal was then exposed to an experimental physical […]
CSIR NET Life Science Previous Year Questions and Solution on Brain, Behavior and Evolution
What Are Zeitgebers? The Environmental Cues That Synchronize Your Biological Clock
Which one of the following is correct regarding zeitgebers? (1) Have no effect on biological rhythms (2) Sense biological rhythms (3) Synchronize biological rhythms (4) Abolish biological rhythms What […]
CSIR NET Life Science Previous Year Questions and Solution on Brain, Behavior and Evolution
What Circadian Rhythmicity Is—and Isn’t: Debunking Common Myths
Which one of the following descriptions does NOT apply to circadian rhythmicity? (1) A process that can be found in bacteria, plants, fungi, and animals (2) A process that is […]
CSIR NET Life Science Previous Year Questions and Solution on Brain, Behavior and Evolution
Suprachiasmatic Nucleus: The Master Circadian Clock in Mammals
In mammals, the primary circadian clock is located in which of the following parts of the brain? (1) Occipital lobe of cerebrum (2) Amygdala (3) Suprachiasmatic nucleus (4) Frontal lobe […]
CSIR NET Life Science Previous Year Questions and Solution on Brain, Behavior and Evolution
Cryptochrome: The Key Photoreceptor for Light Entrainment of Biological Clocks in Flies, Moulds, and Plants
The photoreceptor commonly involved in light entrainment of the biological clock in flies, moulds and plants is (1) phytochrome. (2) rhodopsin (3) carotenoid. (4) Cryptochrome. What Is Cryptochrome? Cryptochrome is […]
CSIR NET Life Science Previous Year Questions and Solution on Brain, Behavior and Evolution
What Happens to a Bird’s Biological Clock in Constant Darkness? Understanding Free-Running Rhythms
If bird is kept is a closed cage such that all external clues are blocked then what would be effect on its biological clock (1) No effect (2) It will […]
CSIR NET Life Science Previous Year Questions and Solution on Brain, Behavior and Evolution
Suprachiasmatic Nucleus: The Master Clock Controlling Human Circadian Rhythms
Circadian rhythms in humans are controlled by (1) Medulla (2) Cortex (3) Pituitary gland (4) Suprachaismatic nucleus What Is the Suprachiasmatic Nucleus? The suprachiasmatic nucleus is a tiny cluster of about […]
CSIR NET Life Science Previous Year Questions and Solution on Brain, Behavior and Evolution
What Is Spite? Understanding Costly Interactions in Animal Behavior
An interaction where the actor and the recipient both suffer a cost is referred to as (1) Altruism (2) Cooperation (3) Mutualism (4) Spite Defining Spite in Animal Behavior […]
