TLS Online TPP Program

#Question id: 2149


A ligand-gated ion channel (such as the nicotinic acetylcholine receptor) is:

#SCPH28 | Zoology
  1.  a charged lipid in the membrane bilayer that allows ions to pass through.

  2. a membrane protein that permits a ligand to pass through the membrane only when opened by the appropriate ion.

  3. a membrane protein that permits an ion to pass through the membrane only when opened by the appropriate ligand.

  4. a molecule that binds to the membrane thereby allowing ions to pass through.

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TLS Online TPP Program

#Question id: 11268

#SCPH28 | Zoology

Consumption efficiency (CE) is the proportion of production at one trophic level that is eaten by, or ingested, by the next trophic level but Assimilation efficiencies (AE) is the proportion of ingested energy that is assimilated into the bloodstream. Which of the Following statement is correct?

TLS Online TPP Program

#Question id: 11269

#SCPH06 I Botany

Following table represent Loss of energy from ingested food at different process?


What is value of A, B, C and D respectively?

TLS Online TPP Program

#Question id: 11269

#SCPH28 | Zoology

Following table represent Loss of energy from ingested food at different process?


What is value of A, B, C and D respectively?

TLS Online TPP Program

#Question id: 11270

#SCPH06 I Botany

Consumption efficiency is the proportion of production at one trophic level that is eaten by, or ingested, by the next trophic level which of the following is correct statement?

A. Consumption efficiencies of herbivore is higher in ocean than grassland

B. In aquatic ecosystems, production efficiencies of herbivore are greater than carnivores

C. Assimilation efficiencies for carnivores are typically higher than those of herbivores

D. Assimilation efficiency depends on the quality of food eaten and the physiological efficiency of the consumer

TLS Online TPP Program

#Question id: 11270

#SCPH28 | Zoology

Consumption efficiency is the proportion of production at one trophic level that is eaten by, or ingested, by the next trophic level which of the following is correct statement?

A. Consumption efficiencies of herbivore is higher in ocean than grassland

B. In aquatic ecosystems, production efficiencies of herbivore are greater than carnivores

C. Assimilation efficiencies for carnivores are typically higher than those of herbivores

D. Assimilation efficiency depends on the quality of food eaten and the physiological efficiency of the consumer

TLS Online TPP Program

#Question id: 11271

#SCPH06 I Botany

Autotrophs in the aquatic ecosystem, unlike their counterparts in the terrestrial ecosystem are mostly microscopic and very low in indigestible (to the herbivores) matter. Following some observation are given? 

A) Tropic level transfer efficiency is greater in aquatic ecosystem than terrestrial ecosystem  

B) Tropical forest herbivores have higher consumption efficiencies than grassland herbivores

C) Flow of energy and nutrient is rapidly in aquatic ecosystem than terrestrial

D) Production efficiency of higher tropic level is greater than lower tropic level