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#Question id: 8935

What may have occurred to prevent species that are of the same grade from also belonging to the same clade?

#9. Diversity of Life Forms
  1. similar structures arising independently in different lineages
  2. convergent evolution among different lineages
  3. adaptation by different lineages to the same selective pressures
  4. A, B, and C
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TLS Online TPP Program

#Question id: 12401

#6. System Physiology – Plant

IAA enters the cell either passively in the undissociated form (IAAH) or by transporter in the anionic form (IAA-) , which one of the following  transporter are involved in influx of the anionic form of auxin?
TLS Online TPP Program

#Question id: 1420

#4. Cell Communication and Cell Signaling

Examination of a cell’s structure reveals condensed chromatin, a shrunken cytoplasm, but unfragmented DNA and a lack of blebbing. If this cell has been triggered to undergo apoptosis by an extrinsic factor, which of the following events has NOT likely happened yet?
TLS Online TPP Program

#Question id: 8889

#9. Diversity of Life Forms

What would be the most effective method of reducing the incidence of blood flukes in a human population?
TLS Online TPP Program

#Question id: 19695

#13. Methods in Biology

Which of the following leads are used to record ECG by using two active electrodes?
TLS Online TPP Program

#Question id: 8886

#9. Diversity of Life Forms

Which characteristic is shared by both cnidarians and flatworms?