TLS Online TPP Program

#Question id: 3882


The reverse transcriptase of an animal RNA virus catalyzes:

#Unit 3. Fundamental Processes
  1. degradation of the RNA strand in a DNA-RNA hybrid.

  2. insertion of the viral genome into a chromosome of the host (animal) cell.

  3. RNA formation in the 3'  5' direction.

  4. RNA synthesis, but not DNA synthesis.

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TLS Online TPP Program

#Question id: 10891

#Unit 10. Ecological Principles

In a lake ecosystem with three trophic levels - Phytoplankton (P), Zooplankton (Z) and Carnivore (C) is control by bottom-up effects, which of the following observation is incorrect?

TLS Online TPP Program

#Question id: 10892

#Unit 10. Ecological Principles

Considering environment and ecosystem, identify the INCORRECT statement

TLS Online TPP Program

#Question id: 11265

#Unit 10. Ecological Principles

Approximately how many kg of carnivore production can be supported by a field plot containing 2000 kg of plant material?

TLS Online TPP Program

#Question id: 11266

#Unit 10. Ecological Principles

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

TLS Online TPP Program

#Question id: 11276

#Unit 10. Ecological Principles

Following statement regarding efficiency at different tropic level for secondary production?

A-high production efficiency individual able to survive at little food

B-production efficiency decrease toward increase tropic level 

C-aquatic herbivore is more efficient grazer than terrestrial grazer

D- Carnivore assimilation efficiency appear to average around 10%

Which above combination are correct?

TLS Online TPP Program

#Question id: 11277

#Unit 10. Ecological Principles

If a species is a keystone predator, then its removal from a community should

(A) Increase population size of the predator’s preferred prey

(B) decrease species diversity in the prey community

(C) decrease productivity of the predator’s preferred prey

(D) increase species diversity in the prey community