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TLS Online TPP Program

#Question id: 7306

A plant scientist was hired by a greenhouse operator to devise a way to force iris plants to bloom in the short days of winter. Iris normally blooms as a long-day (short-night) plant. Which of the following has the best chance of creating iris blooms in winter?

#Unit 5. Developmental Biology
  1. Artificially increase the period of darkness in the greenhouse.
  2. Increase the temperature to more closely follow summer temperatures.
  3. Alternate four hours of darkness with four hours of light repeatedly over each 24-hour period.
  4. Interrupt the long winter nights with a brief period of light.
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TLS Online TPP Program

#Question id: 7299

#Unit 5. Developmental Biology

Maintenance of the shoot meristems in adult Arabidopsis plants relies on which of the following mechanisms?
TLS Online TPP Program

#Question id: 8955

#Unit 9. Diversity of Life Forms

Which of the following characteristics generally applies to protostome development?
TLS Online TPP Program

#Question id: 1093

#Unit 4. Cell Communication and Cell Signaling

Which of the following activities would be inhibited by a drug that specifically blocks the addition of phosphate groups to proteins?
TLS Online TPP Program

#Question id: 5700

#Unit 8. Inheritance Biology

During meiosis, homologous chromosomes pair up along their lengths. The most plausible explanation for the karyotype structure shown above is that
TLS Online TPP Program

#Question id: 23433

#General Aptitude

If A + B means A is the father of B; A −B means A is the brother B; A%B means A is the wife of B and A ×B means A is the mother of B, which of the following shows that M is the maternal grandmother of T?