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TLS Online TPP Program

#Question id: 12349

Males in a population differ in the time they spend displaying to females. A researcher hypothesizes that predators are responsible for these differences. Males display for longer durations when there are no predators in the vicinity and for shorter durations when there is a predator nearby. Which of the following study designs is the most appropriate test of this hypothesis?

#Unit 10. Ecological Principles
  1. Map predator distribution in the area; measure the abundance of females; quantify the natural variation in male display rates in areas without predators
  2. Measure display  rates of  males at  the beginning  of  the breeding season; remove all  predators from the study site; then measure male display rates later in the breeding season; repeat for multiple populations
  3. Measure display rates of males in areas with and without predators; randomly assign males to two treatments: (i) capture and release back in original area (ii) capture and switch between areas; measure display rates for all experimental males
  4. Measure display rates of males in areas with and without predators; randomly assign males to two treatments: (i) addition of females to the area (ii) removal of females from the area; measure display rates for all experimental males
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TLS Online TPP Program

#Question id: 23642

#General Aptitude

A man invited some boys and girls on the birthday of his son. The number of boys was less than that of girls by 2.He gave Rs.10 to each boy and Rs.20 to each girl. If total amount distributed by him is Rs.280, what was the number of boys?
TLS Online TPP Program

#Question id: 5666

#Unit 5. Developmental Biology

 When the extracellular side of the receptor binds resact, it activates latent guanylyl cyclase in the cytoplasmic side of the receptor. Active guanylyl cyclase causes the sperm cell to produce more cyclic GMP (cGMP), this compound_____
TLS Online TPP Program

#Question id: 11424

#Unit 10. Ecological Principles

In robert h. Whittaker's approach to relating terrestrial biomes and climatic variables, the principal biomes fall in a triangular area that does not include climates with __________.
TLS Online TPP Program

#Question id: 17072

#Unit 12. Applied Biology

Plastic Film, Teflon (fluoroethylenepropylene copolymer) is biologically inert and are extensively used for monolayer and suspension cultures as thry are
TLS Online TPP Program

#Question id: 10359

#Unit 6. System Physiology – Plant

Nitrate reductases of higher plants are composed of two identical subunits, each containing three prosthetic groups. Which of the following is not the prosthetic group of nitrate reductase;