Organism adapted to dry xeric environment are likely to be (1) Uricotelic (2) Ureotellic (3) Amminotellic (4) Osmoconformers Living in a xeric environment requires a suite of remarkable adaptations to […]
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CSIR NET Life Science Previous Year Questions and Solution on Animal Physiology
Ranking Animals by Urine Concentration: Beaver, Human, and Sand Rat Explained
Arrange the following according to increasing order of concentrated urine (1) Beever Typical urine produced is less concentrated since water conservation is not a survival priority in their habitat.bio.libretexts Humans Humans are […]
CSIR NET Life Science Previous Year Questions and Solution on Animal Physiology
Why Birds Excrete Uric Acid: The Key Role of Water Conservation in Avian Evolution
The excretory waste in birds is uric acid, it suggests that (1) Birds are more advanced (2) Birds are omnivores (3) Birds are adapted for conservation of water (4) Uric […]
CSIR NET Life Science Previous Year Questions and Solution on Animal Physiology
Which Neurotransmitter Release Is Reduced When Light Strikes Rods in the Retina?
The release of which neurotransmitter from the rods of retina is reduced when light strikes its outer segment? (1) Glutamate (2) Acetylcholine (3) GABA (4) Glycine Photoreceptors in the retina, […]
CSIR NET Life Science Previous Year Questions and Solution on Animal Physiology
Why Activated Rhodopsin Fails to Activate Transducin During Prolonged Illumination: The Role of Phosphorylation and Arrestin
Upon prolonged illumination, activated rhodopsin does not activate transducing, hence the vision is impaired. This could be because of the following explanations: A. Most of the activated rhodopsin gets phosphorylated […]
CSIR NET Life Science Previous Year Questions and Solution on Animal Physiology
Phototransduction in Rods: Clarifying Key Molecular Events Triggered by Light in the Retina
When rods of retina kept in dark, were exposed to light, photo transduction occurred. Following are some explanations given by a researcher regarding phototransduction: A. Activation of transducin B. Inhibition […]
CSIR NET Life Science Previous Year Questions and Solution on Animal Physiology
Correct Sequence of Events in Phototransduction in the Retina When Light Falls
Which one is the correct sequence of events that takes place during phototransduction when light falls onto the retina? (1) Closure of Na+ channels → activation of transducing decreased release […]
CSIR NET Life Science Previous Year Questions and Solution on Animal Physiology
Understanding the Mechanism of Dark Current in the Retina: Role of Sodium Channels in Photoreceptors
The dark current in retina is due to (1) Closing of Na+ channels in the outer segment of photoreceptors. (2) Opening of K+ channels in the inner segment of photoreceptors […]
CSIR NET Life Science Previous Year Questions and Solution on Animal Physiology
How Light Affects Rod Photoreceptor Dark Current: Closure of Sodium Channels in Outer Segment
In the dark, rods show a large inward “dark” current which is suppressed by a flash of light. Which one of the following statements, explaining the effect of light, is […]
CSIR NET Life Science Previous Year Questions and Solution on Animal Physiology
Explaining Rayleigh Match Variability in Red Sensitivity: Which Statement Is Incorrect?
A majority of humans with normal colour vision was found to be more sensitive to red light in Rayleigh match, where the subject mixed variable amount of red and green […]
