TLS Online TPP Program

#Question id: 9185


Plants are affected by an array of pathogens. Which of the following is a plant defense against disease?

#Unit 9. Diversity of Life Forms
  1. cells near the point of infection destroying themselves to prevent the spread of the infection
  2. production of chemicals that kill pathogens
  3. acquiring gene-for-gene recognition that allows specific proteins to interact so that the plant can produce defenses against the pathogen
  4. All of the above are plant defenses against disease.
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TLS Online TPP Program

#Question id: 27684

#Unit 10. Ecological Principles

Multidimensional hypervolume is proposed by

TLS Online TPP Program

#Question id: 27683

#Unit 10. Ecological Principles

If a plant has a fresh weight of 150 g, a dry weight of 100g, and a turgid weight of 160g, what is its relative water content?

TLS Online TPP Program

#Question id: 27682

#Unit 10. Ecological Principles

Which of the following cells can withstand temperatures down to–38°C?

TLS Online TPP Program

#Question id: 26917

#Unit 10. Ecological Principles

Which of the following is the correct prediction about the relative water content or RWC?
a.RWC is involve to measure of turgidity and water contents of plant cell
b.To estimate RWC, three measurements are needed: fresh weight, turgid weight, and dry weight
c.In drought condition, plant will die if the RWC values is less than 100%
d.RWC values closer to 100% indicate plants are less affected by drought stress

TLS Online TPP Program

#Question id: 26915

#Unit 10. Ecological Principles

Cell walls allow plant cells to build up large internal hydrostatic pressures called

TLS Online TPP Program

#Question id: 26914

#Unit 10. Ecological Principles

Some given statements about anti freezing are given;
a.some invertebrates to withstand temperatures as low as –18°C without freezing, in presence of glycoproteins
b.Sodium, potassium, or chloride ions involve to increasing  the blood freezing point, so the lack of these ions some species help to lower the blood freezing point
c.Amphibians release large amount of glucose into the blood to prevent freezing of blood in cold
d.Sodium, potassium or urea function as anti freezing in their blood
e.Glycine causes supercooling in plants
Which of the following statements about supercooling/anti freezing is correct?