TLS Online TPP Program

#Question id: 15392


If an optic vesicle from a Xenopus laevis embryo is placed underneath head ectoderm in a different part of the head from where the frog’s optic vesicle normally occurs then what happens?

#Unit 5. Developmental Biology
  1. the optic vesicle will induce that ectoderm to form lens tissue.
  2. the optic vesicle will not induce that ectoderm to form lens tissue
  3. the optic vesicle will inhibit that ectoderm to form lens tissue
  4. the optic vesicle will induce that ectoderm to form other tissues rather than lens
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TLS Online TPP Program

#Question id: 11532

#Unit 6. System Physiology – Plant

Which of the following are the primary sites of IAA synthesis?

TLS Online TPP Program

#Question id: 11533

#Unit 6. System Physiology – Plant

 IAA biosynthesis is associated with__

TLS Online TPP Program

#Question id: 11534

#Unit 6. System Physiology – Plant

Which of the following is the precursor of auxin?

TLS Online TPP Program

#Question id: 11535

#Unit 6. System Physiology – Plant

During IPA pathway in the biosynthesis of auxin using  following enzymes except_____

TLS Online TPP Program

#Question id: 11536

#Unit 6. System Physiology – Plant

IAA has been found to be conjugated to both high- and low-molecular-weight compounds such as,

a) Low-molecular-weight conjugated auxins include esters of IAA with glucose or myo-inositol and amide conjugates such as IAA-N-aspartate

b) High-molecular-weight IAA conjugates include IAAglucan and IAA-glycoproteins found in cereal seeds

c) High-molecular-weight conjugated auxins include esters of IAA with glucose or myo-inositol and amide conjugates such as IAA-N-aspartate

d) Low-molecular-weight IAA conjugates include IAAglucan and IAA-glycoproteins found in cereal seeds

Which of the following is the correct prediction about low-and high-molecular weight ?

TLS Online TPP Program

#Question id: 11537

#Unit 7. System Physiology – Animal

Testosterone is an example of a chemical signal that affects the very cells that synthesize it, the neighboring cells in the testis, along with distant cells outside the gonads. Thus, testosterone is an example of ________.

 I) an autocrine signal

 II) a paracrine signal

 III) an endocrine signal