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TLS Online TPP Program

#Question id: 4635

Which statement about natural selection is most correct?

#Section 2: Evolution

  1. Adaptations beneficial in one habitat should generally be beneficial in all other habitats as well.

  2. Different species that occupy the same habitat will adapt to that habitat by undergoing the same genetic changes.

  3. Adaptations beneficial at one time should generally be beneficial during all other times as well.

  4. Well-adapted individuals leave more offspring, and thus contribute more to the next generationʹs gene pool, than do poorly adapted individuals.

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TLS Online TPP Program

#Question id: 10708

#Section 1: Ecology

Which of the following statements is a likely explanation for why invasive species take over communities into which they have been introduced?
TLS Online TPP Program

#Question id: 10710

#Section 1: Ecology

Researcher study the diversity of 3 communities, 4 species was recorded from all community. Presence (+) and absence (-) of species are given 


What is similarity coefficient between A & B, B & C, and A & C RESPECTIVELY?
TLS Online TPP Program

#Question id: 10714

#Section 1: Ecology

What is value of Gini-simpson indices of following community? 

 Species identity Number of individuals 
 P 140
 Q 50
 R 2
 S 2
 T 2
 U 2
 W 2
TLS Online TPP Program

#Question id: 10715

#Section 1: Ecology

Following table shows the presence (+) or absence (-) of five species in three communities (A, B, C):

 Species Community A Community B Community C 
 1 10 0 0
 2 09 20 30
 3 11 18 50
 4 10 22 0
 5 10 20 10

Based on the above, which of the following is the correct order of diversity strength communities?
TLS Online TPP Program

#Question id: 10716

#Section 1: Ecology

The stability of a food web in a community is quantified using certain parameters which are defined below. Which of the following is an CORRECT representation?

A. Community with more complex is more stable

B. Community with more number of alternate is more stable

C. Stability of community is inversely proportional to Connectance 

D. Community with higher value of dominax index is more stable
TLS Online TPP Program

#Question id: 10717

#Section 1: Ecology

Following represents four different regions, each with four different sites on different-sized mountains. Which of the following statement is correct? 


a) In region ‘a’ gamma diversity (γ) is one, and alpha diversity (α) diversity is also 1

b) In region ‘b’ gamma diversity (γ) is 4, and alpha diversity (α) diversity is 1

c) In region ‘c’ gamma diversity (γ) is six, and beta diversity (β) diversity is 2

d) The gamma diversity (γ) are same in region ‘c’ and‘d’.