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TLS Online TPP Program

#Question id: 13018

Generalized global air circulation and precipitation patterns are caused by

#Unit 10. Ecological Principles
  1. Rising, warm, moist air masses cool and release precipitation as they rise and then at high altitude, cool and sink back to the surface as dry air masses after moving north or south of the tropics.
  2. Air masses that are dried and heated over continental areas that rise, cool aloft, and descend over oceanic areas followed by a return flow of moist air from ocean to land delivering high amounts of precipitation to coastal areas.
  3. Polar, cool, moist high pressure air masses from the poles that move along the surface, releasing precipitation along the way to the equator where they are heated and dried.
  4. The revolution of the Earth around the sun.
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TLS Online TPP Program

#Question id: 12646

#Unit 6. System Physiology – Plant

A major jasmonic acid signaling pathway is involved in most plant defenses against insect herbivores is the____
TLS Online TPP Program

#Question id: 12645

#Unit 6. System Physiology – Plant

Classes of secondary metabolites, have strong antimicrobial activity have been proposed to function as defenses against pathogens in the intact plant these are_____X_______,  a group of triterpenes thought to disrupt fungal membranes by binding to sterols
TLS Online TPP Program

#Question id: 12643

#Unit 6. System Physiology – Plant

Which of the following is the first polypeptide hormone discovered in plants?
TLS Online TPP Program

#Question id: 12642

#Unit 6. System Physiology – Plant

The systemic production of proteinase inhibitors in young tomato plants is triggered by a complex sequence of events such as;
1) Prosystemin is proteolytically processed to produce the short polypeptide called systemin
2) Systemin is then transported out of the wounded leaf via the phloem.
3) systemin is believed to bind to a site on the plasma membrane and initiate the biosynthesis of jasmonic acid
4) Wounded tomato leaves synthesize prosystemin, a large recursor protein
5) Systemin is released from damaged cells into the apoplast
6) Jasmonic acid eventually activates the expression of genes that encode proteinase inhibitors
Arrange the correct sequence of given above following statements ;
TLS Online TPP Program

#Question id: 12641

#Unit 6. System Physiology – Plant

 Among the diverse components of plant defense arsenals are proteins that interfere with herbivore digestion, Given some defense compound of plants in column I with its given action in column II

Column I

column II

I)  α-amylase inhibitors

a) Antidigestive proteins, block the action of herbivore proteolytic enzymes. After entering the herbivore’s digestive tract, they hinder protein digestion by binding tightly and specifically to the active site of protein-hydrolyzing enzymes such as trypsin and chymotrypsin

II) Lectins

b) block the action of the starch-digesting enzyme

III) proteinase inhibitors

c) A defensive proteins that bind to carbohydrates or carbohydrate-containing proteins. After being ingested by an herbivore, bind to the epithelial cells lining the digestive tract and interfere with nutrient absorption
Correctly match the defence compound withits action on herbivore;
TLS Online TPP Program

#Question id: 12530

#Unit 6. System Physiology – Plant

Some given hormones is also called a ubiquitous hormone?
a) Ethylene
b) Gibberellin
c) Abscisic acid
d) Brassinosteroids