Most common weed killers work by poisoning the root of the plant.

TLS Online TPP Program

#Question id: 12713

#6. System Physiology – Plant

Following are certain statements related to plants water deficit condition;

a) Inhibits Leaf Abscission

b) Enhances Root Extension into Deeper, Moist Soil

c) Limits Photosynthesis within the Chloroplast

d) decreases Resistance to Liquid-Phase Water Flow

e) Increases Wax Deposition on the Leaf Surface

f) Alters Energy Dissipation from Leaves

Which of the following combination given statements is correct 

TLS Online TPP Program

#Question id: 11332

#10. Ecological Principles

The most plausible hypothesis to explain why species richness is higher in tropical than in temperate regions is that

 A) tropical communities are older.

 B) tropical regions generally have more available water and higher levels of solar radiation.

 C) higher temperatures cause more rapid speciation.

 D) diversity increases as evapotranspiration decreases.

TLS Online TPP Program

#Question id: 12748

#13. Methods in Biology

Name the technique which uses an enzyme that produces a colorimetric or luminescence product.

TLS Online TPP Program

#Question id: 2954

#2. Cellular Organization

Cyclin concentrations are highest during which periods of the cell cycle?

TLS Online TPP Program

#Question id: 4129

#3. Fundamental Processes

Which of the following statements about the tRNA that normally accepts phenylalanine is false?  (mRNA codons for phenylalanine are UUU and UUC.)