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TLS Online TPP Program

#Question id: 12755

Which of the following statements best describes why biologists are currently concerned with global warming and the thawing of permafrost in many areas of the tundra biome?

#Section 5: Applied Ecology & Evolution
  1. The thawing process will likely decrease the abundance and diversity of soil-dwelling organisms in tundra habitats.
  2. The bacterial decomposition of  the thawed organic materials on  the widespread areas of  the tundra will produce large quantities of CO2, which will add to greenhouse gases and exacerbate global warming.
  3. Oil and coal deposits will thaw and rise to the surface (because of their lower density) of the tundra, destroying millions of acres of arctic habitat.
  4. Populations of humans inhabiting the arctic will have to move to more southern latitudes, resulting in in- creased competition for resources in already densely populated areas.
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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? 
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):


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’.