Practice Questions

A.) Hydroponic growth system	1.) plant roots lie on the surface of a trough, and nutrient solutions flow in a thin layer along the trough over the roots and this system ensures that the roots receive an ample supply of oxygen
B.) Nutrient film growth system	2.) In this technique, plants are grown with their roots suspended in air while being sprayed continuously with a nutrient solution, This approach provides easy manipulation of the gaseous environment around the root
C.) Aeronic growth system	3.) The technique of growing plants with their roots immersed in nutrient solution without soil and requires a large volume of nutrient solution or frequent adjustment of the nutrient solution to prevent nutrient uptake by roots from producing radical changes in nutrient concentrations and pH of the medium.

1.) plant roots lie on the surface of a trough, and nutrient solutions flow in a thin layer along the

trough over the roots and this system ensures that the roots receive an ample supply of oxygen

2.) In this technique, plants are grown with their roots suspended in air while being sprayed continuously

with a nutrient solution, This approach provides easy manipulation of the gaseous environment around the root

3.) The technique of growing plants with their roots immersed in nutrient solution without soil and requires a large

volume of nutrient solution or frequent adjustment of the nutrient solution to prevent nutrient uptake by roots from

producing radical changes in nutrient concentrations and pH of the medium.

Which of the following combination is correct ?

#Question id: 13228

#Unit 6. System Physiology – Plant

Mineral nutrient	Functions
A.) Silicon(Si)	1.) Constituent of alcohol dehydrogenase, glutamic dehydrogenase, carbonic anhydrase, etc
B.) Manganese(Mn)	2.) Component of sugar phosphates, nucleic acids, nucleotides, coenzymes, phospholipids, phytic acid, etc. Has a key role in reactions that involve ATP
C.) Zinc(Zn)	3.) Contributes to cell wall mechanical properties, including rigidity and elasticity.
D.) Phosphorous(P)	4.) Component of ascorbic acid oxidase, tyrosinase, monoamine oxidase, uricase, cytochrome oxidase, phenolase, laccase, and plastocyanin.
E.) Copper(Cu)	5.) Required for activity of some dehydrogenases, decarboxylases, kinases, oxidases, and peroxidases. Involved with other cation-activated enzymes and photosynthetic O2 evolution

#Question id: 13229

#Unit 6. System Physiology – Plant

Coronatine is a toxin effector produced by the bacterium Pseudomonas syringae. Coronatine is involved interfering which type of defense response?