TLS Online TPP Program

#Question id: 7303


The ‘quartet model’ explains how the protein products of the ABCE-function genes might interact to control floral organ identity. Following statements are based on this model. Which one of them is incorrect?

#SCPH06 I Botany
  1. There are four combinations of floral MADS-box proteins. SEP proteins may form heterodimers with A (AP1) and B (AP3/ PI) proteins (for petals), B (AP3/PI) and C(AG) proteins (for stamens), and C (AG) protein (for carpels).
  2. All these genes, with the exception of AP2 (and its homologues), are MADS-box genes, a broad family of eukaryotic genes that encode transcription factors containing a highly conserved DNA-binding domain (MADS domain).
  3. The protein quartets are transcription factors and may function by binding to the promoter regions of target genes.
  4. According to the model, one dimer of each tetramer recognize two different sites on the same DNA strand, thus bringing these areas into proximity via DNA-bending.

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TLS Online TPP Program

#Question id: 11652

#SCPH06 I Botany

The sequence of changes initiated by disturbance is called succession, and the ultimate association of species achieved is called

TLS Online TPP Program

#Question id: 11652

#SCPH28 | Zoology

The sequence of changes initiated by disturbance is called succession, and the ultimate association of species achieved is called

TLS Online TPP Program

#Question id: 11653

#SCPH06 I Botany

Given some characteristics of the climax community

i) Tolerate its own reactions

ii) Tends to become mesic

iii) Less stable

iv) Complex stratification

v) Simple food web

vi) Less mutualism

vii) Gross production is equals to community respiration

viii) Net community production is zero

Which of the following combination shows the characteristics of climax community?

TLS Online TPP Program

#Question id: 11653

#SCPH28 | Zoology

Given some characteristics of the climax community

i) Tolerate its own reactions

ii) Tends to become mesic

iii) Less stable

iv) Complex stratification

v) Simple food web

vi) Less mutualism

vii) Gross production is equals to community respiration

viii) Net community production is zero

Which of the following combination shows the characteristics of climax community?

TLS Online TPP Program

#Question id: 11654

#SCPH06 I Botany

Succession start from the water body and continuos in community dyanamics, changes species composition as well as changes in structure also. Which one is the correct composition of hydrosere process?

TLS Online TPP Program

#Question id: 11654

#SCPH28 | Zoology

Succession start from the water body and continuos in community dyanamics, changes species composition as well as changes in structure also. Which one is the correct composition of hydrosere process?