Fever is an abnormal elevation of body temperature. Following statements are regarding to the cellular mechanism of fever.

A. Pyrogens produce fever by increasing the hypothalamic set-point temperature.

B. the mechanism of pyrogen action is increased production of interleukin-1 (IL-1) in phagocytic cells.

C. IL-1 then acts on the anterior hypothalamus to increase local production of prostaglandins, which increase the set-point temperature.

D. IL-1 then acts on the posterior hypothalamus to increase local production of prostaglandins, which increase the set-point temperature.

E. IL-1 then acts on the posterior hypothalamus to increase local production of prostaglandins, which decrease the set-point temperature.

Which of the following combination is correct?

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#Question id: 24541

#Unit 9. Diversity of Life Forms

Phylogenetic trees represent hypothesis about the evolutionary relationships among a group of organisms, these relationship based on which character?

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#Question id: 24542

#Unit 9. Diversity of Life Forms

In the tree below, the given character state A and B represent for one character. What show the character state A?

a.  Synapomorphy 

b. Plesiomorphy

c. Synplesiomorphy

d. Apomorphy

TLS Online TPP Program

#Question id: 24543

#Unit 9. Diversity of Life Forms

During an experiment observed, a plant species that descended from a white-flower-bearing ancestor eventually became a red-flower-bearing species and made that species “unique”. The red-flower trait is an

TLS Online TPP Program

#Question id: 24544

#Unit 9. Diversity of Life Forms

In the tree below, the given character state character A and B represents;

TLS Online TPP Program

#Question id: 24545

#Unit 9. Diversity of Life Forms

Based on the phylogenetic tree, match the following taxon character with their accurate representation of relationship given in Column I and Column II;

TLS Online TPP Program

#Question id: 24546

#Unit 9. Diversity of Life Forms

Independent of principle of parsimony there is character which are similar between

Bat and hawk but this character arrived at via independent evolution and not showing common ancestor. This is an example of_____