TLS Online TPP Program

#Question id: 2629


Case of constitutive mutants,

#SCPH28 | Zoology
  1. Lac Oc, required a higher concentration of repressor to achieve full binding than did the wild-type operator.

  2. Lac I-, that causes the repressor to bind IPTG more loosely than normal.

  3. Only A

  4. A & B both

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TLS Online TPP Program

#Question id: 11271

#SCPH28 | Zoology

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

TLS Online TPP Program

#Question id: 11272

#SCPH06 I Botany

Measurement of phytoplankton production, take sample of phytoplankton suspended in three bottles in lake. One bottle as control assumed as initial, second bottle (D) was kept in dark while third bottle (L) was kept in light. After some time productivity measure fallow

A- Difference in dissolved oxygen between light bottle and dark bottle yield NET primary productivity

B- Difference in dissolved oxygen between light bottle and initial bottle yield NET primary productivity

C- Difference in dissolved oxygen between light bottle and initial bottle yield Grass primary productivity

D- Difference in dissolved oxygen between light bottle and dark bottle yield total oxygen produced by photosynthesis

Which above combination of statement are correct?

TLS Online TPP Program

#Question id: 11272

#SCPH28 | Zoology

Measurement of phytoplankton production, take sample of phytoplankton suspended in three bottles in lake. One bottle as control assumed as initial, second bottle (D) was kept in dark while third bottle (L) was kept in light. After some time productivity measure fallow

A- Difference in dissolved oxygen between light bottle and dark bottle yield NET primary productivity

B- Difference in dissolved oxygen between light bottle and initial bottle yield NET primary productivity

C- Difference in dissolved oxygen between light bottle and initial bottle yield Grass primary productivity

D- Difference in dissolved oxygen between light bottle and dark bottle yield total oxygen produced by photosynthesis

Which above combination of statement are correct?

TLS Online TPP Program

#Question id: 11273

#SCPH06 I Botany

Use the following diagram of a hypothetical food web to answer the question. The arrows represent the transfer of energy between the various trophic levels. Which letter represents an organism that could only be a primary consumer and secondary carnivores respectively?




TLS Online TPP Program

#Question id: 11273

#SCPH28 | Zoology

Use the following diagram of a hypothetical food web to answer the question. The arrows represent the transfer of energy between the various trophic levels. Which letter represents an organism that could only be a primary consumer and secondary carnivores respectively?




TLS Online TPP Program

#Question id: 11274

#SCPH06 I Botany

Assimilation efficiency (AE) is the proportion of ingested energy assimilated in to blood stream but Production efficiency (PE) is the proportion of assimilated energy that is incorporated in to biomass. Following some statement is correct?

A. Assimilation efficiencies of aquatic herbivore is greater than terrestrial herbivore

B. Production efficiencies of higher tropic level are greater than lower tropic level

C. production efficiencies of vertebrate is less than invertebrate

D. Assimilation efficiencies of Carnivore are often greater than herbivore