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TLS Online TPP Program

#Question id: 7299

Maintenance of the shoot meristems in adult Arabidopsis plants relies on which of the following mechanisms?

#SCPH01 Biochemistry
  1. A transcription factor encoded by the SHOOT MERISTEMLESS gene is expressed in shoot meristem cells and maintains them in their undifferentiated state.
  2. A homeobox transcription factor encoded by CLAVATA gene is expressed in the organizing center and initiates a signal to the overlying cells to behave as stem cells.
  3. Shoot meristem cell secrete proteins encoded by WUS family that antagonize CLV expression thereby restricting the size of shoot meristems.
  4. A transcription factor encoded by the SHOOT MERISTEMLESS gene is expressed in shoot meristem cells and maintains them in their differentiated state.
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TLS Online TPP Program

#Question id: 11471

#I Life Science/ Life Sciences Group – I-V

Hair cells in the vertebrate ear are responsible for transducing sound pressure waves. Ion channels in the hair cell membrane open when ________.
TLS Online TPP Program

#Question id: 27719

#Research Methodology

The Process of describing the data that is huge and complex to store and process is known as ______
TLS Online TPP Program

#Question id: 5452

#SCPH28 | Zoology

What are polygenes?
TLS Online TPP Program

#Question id: 5716

#SCPH28 | Zoology

Which of the meiotic pairing possibilities in tetraploids and their consequence is correct?

A-chromosomes pair as bivalents, segregate normally producing diploid gametes.

B- Chromosomes pair as quadrivalent, segregates normally producing tetraploid gametes.

C-Chromosome pair as Trivalents form, segregation leads to nonfunctional aneuploid gametes

 D- Chromosome pair as Trivalents form, segregation leads to producing diploid gametes
TLS Online TPP Program

#Question id: 11554

#SCPH28 | Zoology

What happens in a cell when adenylyl cyclase is activated?