TLS Online TPP Program

#Question id: 1065


Resistance of some animals to certain viral diseases is based on

#Unit 4. Cell Communication and Cell Signaling
  1. lack of spikes for attachment.

  2. phagocytosis of the virus by the host cell.

  3. the presence of the viral envelope.

  4. lack of specific receptors on the host cell.

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TLS Online TPP Program

#Question id: 10708

#Unit 10. Ecological Principles

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: 10709

#Unit 10. Ecological Principles

Researcher study the diversity of 2 communities, following is relative abundance of each species at different community? ( ln .5 = -0.69  , ln .25= -1.38  , ln .12= -2.12)


What is value of Shannon index of community A and community B respectively?

TLS Online TPP Program

#Question id: 10710

#Unit 10. Ecological Principles

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: 10711

#Unit 10. Ecological Principles

Following table shows the number of individuals of five tree species in a community

 Tree Species No. of Individuals
 A 50
 B 20
 C 20
 D 10

Based on the above, the Simpson’s index and Shannon weaver of the community will be respectively?

TLS Online TPP Program

#Question id: 10712

#Unit 10. Ecological Principles

Researcher study the diversity of 4 communities, following is relative abundance of each species at different community? ( ln .5 = -0.69  , ln .25= -1.38, ln .12= -2.12)

 Species Community A Community B Community C Community D 
 A 10 10 20 35
 B 10 10 00 05
 C 10 10 20 00
 D 00 10 00 00

Which of the following is decreasing order of their Shannon weaver diversity index of community?

TLS Online TPP Program

#Question id: 10713

#Unit 10. Ecological Principles

Following is sampling data of five species in five quadrate is represent. Which of the following is a correct order of decreasing abundance?