TLS Online TPP Program

#Question id: 12468


If the sex ratio in a population is significantly different from 50:50, then which of the following will always be true? 

#Section 1: Ecology
  1. The population will enter the extinction vortex.
  2. The genetic variation in the population will increase over time. 
  3. The genetic variation in the population will decrease over time.
  4. The effective population size will be less than the actual population size.
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TLS Online TPP Program

#Question id: 10695

#Section 2: Evolution

Consumer (+) and resource (-) interactions classified by the two factor

T- Duration or intimacy of the association between individuals

Kp- Probability that resource individuals will be killed

Which of the following some statement are correct?

A-  Value of T for Grazer is greater than parasite

B-  Value of Kp for predator is greater than parasite

C-  Value of Kp for parasite is greater than parasitoid

D-  Value of T for parasitoid is greater than predator


TLS Online TPP Program

#Question id: 10696

#Section 2: Evolution

In a new area two species A and B was discovered and taking energy from another species X and Y respectively. Following some is life history trait of species.

I- A species is often larger than X

II- Each A species taking energy from many X

III- One Y usually supports populations of B species

IV- Fatality of Y is Mild to severe

Which of the following is correct observation of above species?

TLS Online TPP Program

#Question id: 10697

#Section 2: Evolution

Which of the following is correct observation of above species?


TLS Online TPP Program

#Question id: 10698

#Section 2: Evolution

Parasite and predator have long been associated with their respective host and prey respectively. Which of the following is correct statement?

A. Body size of parasite is always smaller than host but predator usually larger than prey

b- Predator immediately kill their prey but parasite may or may not be kill their host

c- Intrinsic rate of parasite is faster than host but intrinsic rate of predator is slower than prey

d- Body association time between parasite and host is more than time association between predator and prey

TLS Online TPP Program

#Question id: 10699

#Section 2: Evolution

Two plant species co-occur in a prairie. Species X always occurs near species Y. However, species Y often occurs in isolation from species X and produces more seeds when alone than when growing next to species X. Which of the following interactions between species X and could generate this pattern?

TLS Online TPP Program

#Question id: 10700

#Section 2: Evolution

Which of the following most important conclusion from the graph?