In cloning experiments on the frog xenopus laevis, nuclei were removed from intestinal cells of tadpoles and transplanted into zygotes whose nuclei had been removed. A small percent of these zygotes developed into normal frogs, suggesting that

TLS Online TPP Program

#Question id: 13225

#Unit 6. System Physiology – Plant

 The three elements are not considered mineral nutrients these are-

TLS Online TPP Program

#Question id: 13226

#Unit 6. System Physiology – Plant

Mengel and Kirkby  have proposed that the essential elements be classified instead according to their biochemical role and physiological function, It shows such a classification, in which plant nutrients have been divided into some basic groups these are;

a.) The first group is nutrients that are part of carbon compounds

b.) The second group is important in energy storage reactions or in maintaining structural integrity

c.) The third group has important roles in reactions involving electron transfer or redox reaction

d.) The fourth group is present in plant tissue as either free ions or ions bound 

Which one of the following group represents CORRECT statements

TLS Online TPP Program

#Question id: 13227

#Unit 6. System Physiology – Plant

Match the following  Special Techniques Are Used in Nutritional Studies;

Which of the following combination is correct ?

TLS Online TPP Program

#Question id: 13228

#Unit 6. System Physiology – Plant

Classification of plant mineral nutrients according to biochemical function

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

Which of the following combination is correct?

TLS Online TPP Program

#Question id: 13229

#Unit 6. System Physiology – Plant

Deficiencies in mineral elements in most species chlorosis (yellowing of the leaves), especially in the older leaves near the base of the plant by

TLS Online TPP Program

#Question id: 13230

#Unit 6. System Physiology – Plant

In very dry soils, the water potential (Yw) may fall below what is called the permanent wilting point, the water potential of the soil is so low that plants cannot regain turgor pressure even if all water loss through transpiration ceases. This means that

a) The hydraulic conductivity decreases drastically 

b) The water potential of the soil (Yw) is less than or equal to the osmotic potential (Ys ) of the plant

c) The water potential of the soil (Yw) is more than the osmotic potential (Ys) of the plant

d) cell osmotic potential (Ys) varies with plant species, the permanent wilting point is clearly not a unique property of the soil, it depends on the plant species