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TLS Online TPP Program

#Question id: 7277

According to this model, Which of the following statements are correct?

#Unit 5. Developmental Biology
  1. SKN-1 is a maternal gene which activates GATA transcription factors in the EMS cell.
  2. The POP-1 signal prevents MED-1,2 proteins from activating the ectodermal transcription factors and instead activates the tbx-35 gene.
  3. The TBX-35 transcription factor activates mesodermal genes in the MS cell, including pha-4 in the muscles and hlh-1 in pharynx.
  4. TBX-35 also inhibits pal-1 gene expression, thereby do not inhibit the MS cell from acquiring the C- blastomere fates.
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TLS Online TPP Program

#Question id: 10719

#Unit 10. Ecological Principles

Five Hypotheses Explain How Species Richness Affects Community Services, Following statement are given
A) Community services decline with decreased species richness in a stepwise fashion.
B) Species that play the same roles in a community can compensate for each other if some are lost under particular conditions
C) Species richness declines even slightly from its natural levels, community services are reduced immediately
D) Community services change as the number of species increases or decreases, but that the direction of change is not predictable.
TLS Online TPP Program

#Question id: 10720

#Unit 10. Ecological Principles

What is the Jaccard index between the two communities?
TLS Online TPP Program

#Question id: 10721

#Unit 10. Ecological Principles

Which above spp having decrease order of abundance?
TLS Online TPP Program

#Question id: 10722

#Unit 10. Ecological Principles

Community 1 contains 100 individuals distributed among four species (A, B, C, and D). Community 2 contains 100 individuals distributed among three species (A, B, and C). Community 1: 5A, 5B, 85C, 5D Community 2: 30A, 40B, 30C Calculate the Shannon diversity (H) for each community.
TLS Online TPP Program

#Question id: 10723

#Unit 10. Ecological Principles

What does the graph tell you about the effect of a keystone species?
TLS Online TPP Program

#Question id: 10724

#Unit 10. Ecological Principles

This example is based on the hypothetical ( x means Present), compare species diversity within different community Which one of the


following conclusions is most appropriate based on the above observations?

A) The beta diversity between the community X and Y is 5

B) The gamma diversity for the these communities are 14

C) The beta diversity between the community X and Z is greater than Y and Z

D) Community Y has minimum Alpha diversity among community