TLS Online TPP Program

#Question id: 397


The loss of water from a plant by transpiration cools the leaf. Movement of water in transpiration requires both adhesion to the conducting walls and wood fibers of the plant and cohesion of the molecules to each other. A scientist wanted to increase the rate of transpiration of a crop species to extend its range into warmer climates. The scientist substituted a nonpolar solution with an atomic mass similar to that of water for hydrating the plants. What do you expect the scientist's data will indicate from this experiment?

#Part-B Specialized Branches in Biotechnology
  1. The rate of transpiration will be the same for both water and the nonpolar substance.

  2. The rate of transpiration will be slightly lower with the nonpolar substance as the plant will not have evolved with the nonpolar compound.

  3. Transpiration rates will fall to zero as nonpolar compounds do not have the properties necessary for adhesion and cohesion.

  4. Transpiration rates will increase as nonpolar compounds undergo adhesion and cohesion with wood fibers more readily than water.

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TLS Online TPP Program

#Question id: 11266

#Part-B Specialized Branches in Biotechnology

Which of the following options lists ecosystems in increasing order of consumption efficiency of herbivore?

TLS Online TPP Program

#Question id: 11267

#Part-B Specialized Branches in Biotechnology

Two boottle containing phyoplankton in growing stage with oxygen level  20 mg/ml, in which one bottle placed in dark but another bottle placed in light , allowed to measurment of oxygen level is  15 mg/ml in dark bottle, 30 mg/ml in light bottle. Which of the following measure GPP is

TLS Online TPP Program

#Question id: 11268

#Part-B Specialized Branches in Biotechnology

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

#Part-B Specialized Branches in Biotechnology

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

#Part-B Specialized Branches in Biotechnology

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

#Part-B Specialized Branches in Biotechnology

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