TLS Online TPP Program

#Question id: 1536


Use the following figure to answer the question. According to figure, which of the following statement is incorrect?

#Unit 4. Cell Communication and Cell Signaling
  1. Tumors as well as normal tissues are likely to consist of small number of stem cells that have self-renewal capability and multipotentiality, precursor cells that have limited proliferative potency, and differentiated cells.

  2. Cancer stem cells are thought to be transformed from tissue specific stem cells, precursor cells and/or differentiated cells by genetic/epigenetic mutations.

  3. Cancer stem cells exist in special microenvironment “niche” and seem to keep their resistance to a variety of anti-cancer treatment methods.

  4. Cancer stem cells do not need microenvironment (hypoxic) for the maintenance of stemness, tumorigenesis, and resistance to anti-cancer treatments, chemotherapy and irradiation.

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TLS Online TPP Program

#Question id: 11657

#Unit 10. Ecological Principles

In the following diagram, three models succession are represented. In this diagram A,B,C and D are the species  and arrows indicate replaced by

Based on the above, which statement is correct.


TLS Online TPP Program

#Question id: 11658

#Unit 10. Ecological Principles

Directional community changes due to the cause of succession, factors involve such as

TLS Online TPP Program

#Question id: 11659

#Unit 10. Ecological Principles

Which of the following steps are involved in stabilization of successful community?

TLS Online TPP Program

#Question id: 11660

#Unit 10. Ecological Principles

Which of the following statements about the succession is true?

TLS Online TPP Program

#Question id: 11661

#Unit 10. Ecological Principles

Autogenic factors results from the community and its organism for example filling in the pond by the dead organism from the pond itself. It included several other factors except____

TLS Online TPP Program

#Question id: 11662

#Unit 10. Ecological Principles

During the successional process generation of community through the short time period successional process as well as long time successional process;

a) During short time period evolve pioneer community from the climax community

b) During short time period generation of the microbial community 

c) During long time period generation of end community (forest) from the pioneer community

d) During long time period generation of the microbial community