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TLS Online TPP Program

#Question id: 8788

A phylogenetic tree is shown for the three domains of life (Eukarya, Archaea, and Bacteria). The tree branches in two directions from the first point, labeled Common ancestor of all life. One branch leads in the direction of Eukarya and Archaea, and the other branch leads to Bacteria. The branch leading to Eukarya and Archaea divide, one branch leading to each domain. The branch leading to Eukarya divides into four branches. One leads to Euglenozoans, and the other three lead to branching points. The first leads to Forams in one direction, and another branching point in the other that leads to Diatoms and Ciliates. The second branching point leads to Red algae in one direction, and a branching point that leads to green algae and land plants in the other direction. The third branching point leads to amoebas in one direction, and a branching point that leads to fungi and animals in the other direction. Land plants, Fungi and Animals are all highlighted.

Examine the figure. If you were a graduate student trying to develop a thesis project that would resolve polytomies, which of the following groups would you study?

#XL - R Botany
  1. animals and fungi
  2. euglenozoans, euryarcheotes, and gram-positive bacteria
  3. forams, red algae, and amoebas

  4. red algae, green algae, and cyanobacteria

     

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TLS Online TPP Program

#Question id: 19863

#XL - P Chemistry

The phenomenon of splitting of spectral lines under the influence of the electric field is known as
TLS Online TPP Program

#Question id: 19864

#XL - P Chemistry

If the energy of electron in H atom is given by expression, − 1312/n2 kJ mol-1, then the energy required to excite the electron from ground state to second orbit is
TLS Online TPP Program

#Question id: 19930

#XL - P Chemistry

In the atomic spectrum of hydrogen, the spectral lines pertaining to electronic transition of
n = 4 to n = 2 refers to
TLS Online TPP Program

#Question id: 19931

#XL - P Chemistry

When electronic transition occurs from higher energy state to a lower energy state with energy difference equal to ΔE electron volts, the wavelength of line emitted is approximately equal to
TLS Online TPP Program

#Question id: 19932

#XL - P Chemistry

If ionising energy of H atom is 13.6 eV, then the second ionising energy of He should be
TLS Online TPP Program

#Question id: 19933

#XL - P Chemistry

The first line in the Balmer series in the H atom will have the frequency