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TLS Online TPP Program

#Question id: 7287

Following statements are regarding to the the floral quartet model and the underlying ABCDE model of organ identity determination in Arabidopsis thaliana.

A. Five floral organ identities (sepals, petals, stamens, carpels, and ovules) are specified by the formation of floral organ-specific tetrameric complexes of MADS-domain transcription factors that bind to two nearby enhancer elements, forming a DNA loop in between.

B. A complex of two class A proteins (APETALA 1) and two class E proteins  (SEPALLATA) determines petal identity.

C. A complex of one class A protein, one class E protein, and one of each of the class B proteins (APETALA 3 and PISTILLATA) determines sepal identity.

D. A complex of one class E protein, two class B proteins, and one class C protein (AGAMOUS) determines stamen identity, while a complex of two class E proteins and two class C proteins determines carpel identity.D. A complex of one class E protein, two class B proteins, and one class C protein (AGAMOUS) determines stamen identity, while a complex of two class E proteins and two class C proteins determines carpel identity.

E. A complex of one class E protein, one class C protein, and one of each of the class D proteins (SHATTERPROOF and SEEDSTICK) controls ovule identity.

Which of the following combination are correct?

#Unit 5. Developmental Biology
  1. A and B
  2. A, B, and C
  3. A, B, C and D
  4. A, D and E
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TLS Online TPP Program

#Question id: 9574

#Unit 10. Ecological Principles

What is the prevailing wind direction in equatorial regions affected by the trade winds?
TLS Online TPP Program

#Question id: 5432

#Unit 8. Inheritance Biology

which of the following are not feature of polygenic inheritance ?
TLS Online TPP Program

#Question id: 10367

#Unit 6. System Physiology – Plant

Cyanobcteria also fixes nitrogen under anaerobic conditions without  heterocyst where?
TLS Online TPP Program

#Question id: 13205

#Unit 6. System Physiology – Plant

The mechanisms that regulate the loading of sucrose from the apoplast to the sieve elements by the sucrose–H+ symporter await characterization. Possible regulatory factors include the following:
a) The solute potential or, more likely, the turgor pressure of the sieve elements
b) Sucrose concentration in the apoplast
c) The available number of symporter protein molecules
Which one of the mechanism that involve to regulate the loading of sucrose?
TLS Online TPP Program

#Question id: 3522

#Unit 8. Inheritance Biology

A haplo-diplod insect, Male are haploid but female are diploid, A female who is heterozygous for recessive red eye color mutation mate with red eye male. What will be percent of wild phenotype color eye among their female?