TLS Online TPP Program

#Question id: 10794


Which one of the following characteristics of about lignin is incorrect?

#I Life Science/ Life Sciences Group – I-V
  1.  Most abundant organic substance in plants and a highly branched polymer of phenylpropanoid groups
  2. lignins are involved in plant–animal interactions, helping to attract animals to flowers and fruit by providing visual and olfactory signals
  3. lignin has significant protective functions in plants, Its physical toughness deters feeding by animals, and its chemical durability makes it relatively indigestible to herbivores
  4. Lignin is generally formed from three different phenylpropanoid alcohols: coniferyl, coumaryl, and sinapyl, alcohols which are synthesized from phenylalanine

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TLS Online TPP Program

#Question id: 7312

#SCPH06 I Botany

Following statements regarding to the classes of genes that regulate floral development:

A.  Floral organ identity genes directly control floral identity. The proteins encoded by these genes are transcription factors that likely control the expression of other genes whose products are involved in the formation and/or function of floral organs.

B.  Cadastral genes act as spatial regulators of the floral organ identity genes by setting boundaries for their expression.

C.   Meristem identity genes are necessary for the initial induction of the organ identity genes. These genes are the positive regulators of floral organ identity.

D.  Cadastral genes act as negative regulators of the floral organ identity genes by inhibits their expression.

E.   Meristem identity genes are the negative regulators of floral organ identity genes.

Which of the above statements are true?

TLS Online TPP Program

#Question id: 6980

#SCPH01 Biochemistry

Teeth form from

TLS Online TPP Program

#Question id: 10404

#SCPH06 I Botany

PIFs promote etiolated development in the dark phenomenon known as

TLS Online TPP Program

#Question id: 18385

#SCPH28 | Zoology

Oil is a natural product, has many components and is biodegradable, the different components being degraded at different rates but still oil spills are considered as recalciterants because

TLS Online TPP Program

#Question id: 19201

#SCPH06 I Botany

Biocatalytic reactions that can be assayed by ion-selective electrode biosensors could be
1. Conversion of urea into ammonium ions
2. Lipid breakdown into fatty acids and hydrogen ions
3. Conversion of glucose into gluconic acid
4. Glucose breakdown into acetyl coA
Which of the above statements are incorrect?