TLS Online TPP Program

#Question id: 10194


Some plant species are not able to acclimate when transferred from a sunny to a shady environment, or vice versa, lack of acclimation indicates that these plants are specialized for either a sunny or a shady environment. When plants adapted to deep-shade conditions are transferred into full sunlight may leaves experiences;

#Unit 6. System Physiology – Plant
  1. black necrosis of the young leaves
  2. Chlorosis and bleaching
  3. Dark green coloration of the leaves including stunted growth
  4. chronic photoinhibition and leaf bleaching, and they eventually die
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TLS Online TPP Program

#Question id: 12835

#Unit 2. Cellular Organization

Following statements are regarding to the surveillance mechanism. Which of the following statement is incorrect?

TLS Online TPP Program

#Question id: 10807

#Unit 6. System Physiology – Plant

Cyanogenic Glycosides and Glucosinolates are nitrogen containing secondary metabolites in plants. Following are some statements regarding the action of Cyanogenic Glycosides and Glucosinolates;

a) Cyanogenic Glycosides release the poison hydrogen cyanide by the action of enzyme known as Hydroxynitrile lyase

b) Release of the mustard-smelling volatiles from glucosinolates is catalyzed by a hydrolytic enzyme, called a thioglucosidase or myrosinase

c) substerate for Glycosidase is Cyanogenic glycoside and Thioglucosidase is Aglycone

d) Like cyanogenic glycosides, glucosinolates are stored in the intact plant separately from the enzymes that hydrolyze them, and they are brought into contact with these enzymes only when the plant is crushed

Which of the following combinations of above statement is true?

TLS Online TPP Program

#Question id: 15190

#Unit 8. Inheritance Biology

The recessive mutant allele that causes cystic fibrosis is much more frequent in Caucasians population than in other world populations. Some scientists believe heterozygotes must have had a survival advantage during plagues such as cholera that occasionally swept through this population. What concept does this illustrate?

TLS Online TPP Program

#Question id: 11170

#Unit 10. Ecological Principles

Which of the following examples is not a behavioural defense against predators?

TLS Online TPP Program

#Question id: 2099

#Unit 2. Cellular Organization

Phosphate-containing lipids include all of the following except