16337.Growth can be measured in terms of
Fresh or fry weight increase
Increase in girth of stem
Increase is surface area of leaf
All the above
16339.The growth in dormant organs is
Completely stopped
Continuous
Temporarily arrested
Permanently arrested
16340.In which of the following, rate of growth gradually slows down and comes to steady stage?
Lag phase
Log phase
Exponential phase
Stationary phase
16341.Identify the precursor substance used in the biosynthesis of gibberellins in plants.
Gibberellic acid
Methionine
Acetyl Co-A
Tryptophan
16343.Which of the following growth harmones in plant is influenced by light?
Gibberellin
Cytokinin
Auxin
Ethylene
16345.The growth of plant differs from growth of animals in being
Diffused
Localised
Localised and diffused
Uniform
16347.Longevity of seed can be prolonged by keeping them at
Dry condition and low temperature
Humidity and low temperature
Low temperature and dryness
High temperature
16348.Cytokinins are the derivatives of
Purine base guanine
Purine base adenine
Pyrimidine base cytosine
Both 1 and 2
16350.Garner and Allard are credited for discovery of
Phototropism
Photoperiodism
Phtorespiraton
Photomorphogenesis
16351.Which property is specifically attributed to gibberellins?
Apical bud growth inhibition
Root initiation in stem cuttings
Elongation of genetically dwarf plants
Act as selective weedicide
16352.Who classified the plants into different categories on the basis of photoperiodic responses
benthem and Hooker
cajlachjan
Garner and Allard
Linneus
16353.The resumption of active growth of embryo is called as
Germination
Growth
Quiescence
Viability
16354.The plant which needs light period shorter than critical period is called
Short day plant(SDP)
Long day plant(LDP)
Day neutral plant(DNP)
Short long day plant(SLDP)
16356.The harmone which stimulates the flowering in vernalized plant is
Florigen
Vernalin
Cytokinin
Gibberellin